Since GOG releases don't seem to have their changelog, I've just opened this post to copy here the recent changelogs of For The King.

Update 1.0.7771

Fixes
Fixed an issue where people who have already achieved certain achievements pre full release were not getting new unlocks. Your unlocks should now appear when you next start the game.
Fixed issue where elemental ailment SFX would persist indefinitely
Fixed issue where slowing an already slowed character would result in them losing their slow status
Fixed an issue with the enemy/encounter ratio of dungeons
Hobo invasion! He will now spawn only once, and stop asking you for money...
Removed the Roc Nest encounter from being incorrectly included too soon (if you see this in your old save games, please avoid it, but it will no longer spawn from now on)
End Turn Tutorial now properly localized
Minor Spelling and Grammar fixes
Equipped shields consistent among characters and crash less with backpack
Border Edge fixed on Stone Hero Portraits

Gameplay
Spiders have less/no armor, slightly reduced health, and do slightly less damage
Ghouls Piercing Attack changed to Regular Attack, reduced evasion, reduced crit chance, lower max damage, slight increase in resistance
General Reduction in Crit Chances for high crit enemies across the board. Typically now only birds some special enemies have crit chances above 10%
Leprechaun -5% crit chance (now 10%)
Pirate -10% crit chance (now 10%)
Goblin Assassin -15% crit chance (now 10%)
Death Knight Boss -10% crit chance (now 10%)
Forest Knoll -10% crit chance (now 10%)
Crow -5% crit chance (now 10%)
Bandits -10% crit chance (now 5%)
Thief -15% evasion
Swamp Fly -10% evasion
Snow Goblin Assassin -25% evasion (now 25%)

Changelog for Patch 1.0.7827 (added 08 May 2018):

* fixed the "can't use orbs" bug

Changelog for patch 1.0.1.7902 (added 11 May 2018):

Fixes

- Fixed issue where several "icy" enemies weren’t properly tagged as Ice class
- Fixed bug where Embedded Blade encounter wouldn’t drop an item if you didn’t already have it unlocked in the lore store
- Very Low Quality setting now uses proper texture resolution which should result in slightly improved performance
- Fixed issue where Owlbear’s death hug attack was always blocked
- Fixed Mimic placement in the Encounter Card
- Fixed an issue where the Dungeon Merchant items would all be greyed out, despite having enough cash to buy (maybe he just didn’t like you? How rude...)
- Fixed an issue where you could Pickup Party and pull people out of other nearby boats or balloons
- In certain circumstances during local co-op, a mouse may have lost the ability to control a boat
- In dungeon crawl online, the number of completed dungeons may have been incorrectly reported across the network
- End game credits would freeze if entering the menu
- Incorrect text was displayed when entering a carnival without a ticket while playing online
- Fixed some intermittent freezes on Linux due to primitive type conversions
- In Frost Adventure online: the Tavern Pirate fight could be engaged by multiple clients online, and the enemies would double up
- When attacking a haunt from a boat: the portraits of characters pulled in to the fight are now accurate
- Fighting the Kraken when Deimos is active now respects the original ocean diorama
- Fixed an issue with some combat allowing players to use unlimited items per turn
- Fixed an issue with the Kraken not dropping any loot in some instances
- Fixed an issue with Quest Items not being removed from inventories when they are no longer needed (Shovel, Mead, Key Fragments etc..)

Gameplay

- Forest Mystic/Protector no longer have pierce attack
- Forest Protector now has group lightning attack
- Pixies now do full attack damage on their regular attack
- Chaos Fairy now casts Protect Group instead of Protect Others
- Lightning Hawk Regular attack fixed (was too easily blocked) and now pierces
- Hide boots set to +2 vitality and Fur Boots set to +4 vitality
- Added pickup radius hex highlighting for boats and balloons
- Haunts and certain encounters now show combat radius when moused over

Changes

- Added version validation check in the online browser
- General polish to dead adventurers
- Improved Owlbear attack FX
- Improved Storm Lighting
- Toned down and optimized snowstorm FX
- Optimized Rainstorm FX
- Adding backing to HUD Vote Buttons to increase visibility
- Version Warning added to Online Lobby to show when the host’s version doesn’t match your version
- General polish pass on player models
- Jelly Cube attack FX now 300% more goopy
- Identify Scrolls cannot be used in the overworld on a treasure chest that a character is also standing on

Changelog for Patch 1.0.3.8315 (added 20 Jun 2018)

Gameplay
New adventure: Hildebrant’s Cellar - endless dungeon mode
New in Hildebrant’s Cellar: encounters from the overworld: Sanctums, Stone Heros, and Dead Adventurers
New House Rules so players can customize certain game rules (more to come in the future!)
New water temple dungeon
New chaos skull enemy
New acid blob enemies
New armored ogre enemy
New hellhound enemy
New poison barrel, acid bucket, spikes, tentacles, statue and magnet traps added to various dungeons
New trinket and amulet to protect against acid
Cornelius encounter made easier
Added gold drop multiplier to be used with certain game modes
Dead players can now trade with other players to avoid situations where you might lose access to gold or items

Fixes
Included missing player skills from encyclopedia
Online lobby polish, now shows game rules and more details per game
Fixed issue where certain helmets didn’t fit Forest Mystic’s head properly
Fixed bug where Fire Skelly Mage was doing high level burn damage instead of low level burn damage
Fixed bug where some backpacks would not fall off upon death
Reduced extra screen shaking upon some character deaths
Fixed rendering bugs with hexes on min spec
Fixed occasional game hang on Lich Crypt chest
Fixed bug with fleeing in online games
Market list update fix for online games

Other changes and features
Polish Language support
Haunts lock level when revealed
All pipe upgrades are done through the market
Boats are slightly cheaper
Changes to end game sequence and imagery
New ghoul animation set
New detailed character stats page
Added 14 new items to lore, including new high end custom clothing for only the most discerning of customers
Added mead helmet for totally non discerning customers
Added ability to customize armor when creating a character
New post combat animations to reflect player’s actions
Texture optimization pass
Lore unlocks and purchases are stored outside of Steam/GOG. This is good for GOG users who don’t want to use Galaxy
Re-enabled the Reset Lore Button. Don’t push this button unless you want to lose all your lore. You’ve been warned.

Changelog for patch 1.0.7.8349 (added 25 June 2018):

- Reduced Goblin max damage from 9 to 8
- Fixed an issue where Orbs (eg: Smoke Orb, or Precious Pearl, etc...) were not sending their buff status effects across the network
- Fixed a crash that could occur when dying at the end of Frost Adventure
- Fix an issue where you would not get control back of your character if he was confused and randomly used a panax to cure himself. The panax will now cure the confuse status.
- Fixed an issue where having an immunity to confuse would still cause you to become confused by Hildebrant’s Reserve
- Fixed an issue where in a very specific set of circumstances: a hex may be shown as 'explored' but would not reveal any hidden POI’s or Encounters on it. Resulting in some users not being able to find dungeons in dungeon crawl mode.
- Fixed nighttime lighting on character select screen
- Fixed the hobo becoming invisible if you selected the Demon Skin in character selection. Now you can enjoy the demon in all his shirtless wonder.
- Fixed a bug where a crash could occur at the end of a dungeon that subsequently is cleared from the world
- Added a touch of color to the dungeon room map
- Fixed an issue where you could not change the locality if loading a game from the Online Server Browser

Silent update: 1.0.7.8361


Thanks for doing this guys. We actually don't have this ability, so this is appreciated. I'll do my best to post updates here from now on.

Today, I release a silent update targets at GOG users. Specifically non-galaxy users regarding bugs with Lore. Lore is now all local, and not reliant on galaxy. It will use galaxy cloud saves if you are using galaxy.

If you have experienced bugs where the start game menu has too many entries, the ui looks buggy, and a new game cannot be started: then you will need to delete your player.db file located with the save games.
On windows this defaults to:
C:\Users\USERNAME\AppData\LocalLow\IronOak Games\FTK\save

Changelog for patch 1.0.8.8528 (released 2 August 2018)

Fixes/Changes

-Fixed a bug in Hildebrant’s Cellar that resulted in the Rooms display going out of sync after a while in online co-op
-Adjusted difficulty of Hildebrant’s cellar beyond Level 10
-In the cellar end game screen - (because you’ve all gotten so good) - we’ve added the ability to show more room tokens

Changelog for patch 1.0.8.8751 (released 1 September 2018)

Fixes/Changes

-Potential fix for DisconnectByClientTimeout error when loading an online game (*)
-Fixed a game hang when a character dies on his turn, and at the same time: a Chaos Shrine is revealed
-Added some behind the scenes play-data analytics gathering (no personal information is collected)

(*) If you have been experiencing this issue in the past, then we’d ask you kindly to let us know - once you’ve updated - if it persists, or has been resolved. Feel free to reach out to us using the in game bug report tool and let us know.

2018-10-26
Update 1.1.0.9114 - New mode Gold Rush!

Full notes here:
https://steamcommunity.com/games/527230/announcements/detail/1710698895750298190


New Features / Changes:
New Uncooperative game mode: Gold Rush. Includes:
A new realm: the Midnight Woods
A new Achievement for winning Gold Rush
Weapon switching in combat
Safety Stone: teleport to safety at an increasing cost of penalty to stats
Two more boats: Raft, and Fishing Boat (the original boat is now called “Merchant Boat”
Boat repair kit - useable in the overworld, and Kraken combat
Boats, and boat repairs purchasable in coastal cities, and ports
Treasure chests drop more loot
Sea caves have been reskinned with unique art
Camera shake has been reduced in combat
New Kraken animations
New ocean tiles with smaller islands to break up the look of the sea
Added more items to the Magic Merchant

Fixes / tweaks:
Fixed an issue where enemies would spawn too densely
Fixed an exploit where using “more info” on a hidden hex would take the player to the encyclopedia for what was hidden there
Fixed a bug where you could upgrade the Dragon Pipe without needing it
When receiving a main quest with a hidden location: the camera will pan to the middle of the destinations realm, instead of on top of the hidden location
Encyclopedia Menu tweaked, possibly in preparation for something in the future...
Fixed a bug where the Walloper sold for too little
Fixed an issue where “+1 focus” appeared twice from some encounter results
Fixed a bug where a chaos attack that was supposed to drain focus, would not drain focus
Using “Pickup Party” in a boat will now pickup members in other boats
Fixed an issue that would result in incorrect roll slot percentages communicated between clients online
Fixed a bug where players could not use belt items at the end of a dungeon floor
Fixed a bug where some water encounters could spawn on land when walking off a boat
Various controller fixes

Changelog for Patch 1.0.10.9397 "Into The Deep" (added 21 Nov 2018):


New Features / changes

New Into The Deep Adventure
8 new Achievements
4 additional boat types. Boats have varying degrees of movement rolls, HP, and even armor.
New chest types and of course, new mimics
On ship combat
Enemy ships
New magic type, Water. Wet status temporarily removes all immunities for both players AND enemies. Bleed skellys bleed!
New weapon type, Guns. There are 3 sub classes of guns, Blunderbuss, Musket, and Cannon. Guns typically require a single slot and are very powerful. However they must be reloaded after firing.
New enemy type, Suicidal. Suicidal enemies will cause massive damage but kill themselves in the process.
New Island Realms. Ashfall Islands and Forest Isles.
New Island tech. Some realms now have outlying islands off their coast. Larger continents may now be broken up into smaller archipelagos.
New and improved Sea Caves.
New rapier animations for the inner swashbuckler in you.
Various tweaks to the Kraken battle to take advantage of new Wet status and new boat types.
Some enemies can now cause boat damage with their attacks.
20 new items, 23 new weapons, 1 new character class, 32 new enemies (8 new races), 12 new lore store unlocks, and 24 new encounters
Boats now purchasable from towns with at least 1 adjacent sea hex
Improved Shipwreck logic, all characters will now shipwreck to same hex

Other Game Changes

Combat Revival: revive and rush a fallen character in combat as a combat action
You can take gold and unequipped items from dead players
Mouseover belt items of offturn characters
Escape button now closes menus before opening the game options menu
Menu interaction cleanup: when opening the sub menu of an item, the sub menu will remain open after your chosen option is selected (assuming there is more than one of the items available) - This works in stores, and character inventories


Fixes

Normalized camera shake in combat, reducing it for most cases.
Slowing an enemy speeds him up. In a specific set of circumstances: casting a slow on an enemy could cause him to speed up
Fixed an issue where Dungeon Crawl could spawn the party on a very small island
Fixed a bug where the Frozen Pool would deal double damage on failure
Polished the Noble Dress outfit so it’s not so poofy
Added missing SFX to combat revive
Fixed Encyclopedia entries that incorrectly stated that 10 is the minimum stat (30 is the minimum)
Fixed Encyclopedia entries that incorrectly stated that Elite Disarm only requires a single slot (it requires fewer slots with less punishing outcomes)
Fixed some logical issues with what items can be used between dungeon rooms, or at stairs of dungeons
Certain weapons now use blended overworld animations to avoid clipping and awkward weapon holding
Streamlined various controller issues

Changelog for Patch 1.0.10.9452 (added 3 Dec 2018):

Fixes / changes

-Fixed an issue online where the Treasure Hunter would not be unlockable if the host already had it
-Fixed an issue where getting killed by a powder monkey by splash damage would not trigger the Achievement
-Fixed an issue where the new lore store items could become non-unlockable
-Fixed a freeze when a treasure chest, or treasure clam that turned into a mimic would result in a hang online

Changelog for patch 1.0.10.9910 (added 3 Apr 2019):

Updates / Fixes

-Japanese and Korean languages added
-Boat Reclamation - turn boats back in to deeds to carry or sell
-New dead character display in overworld, and on character HUD
-Fixed an issue where Snow Caves would spawn the royal chest in a room other than the last one
-Fixed an exploit where infinite gold could be generated in multiplayer
-Ability to skip the intro videos on game start
-Fixed an instance where the item card could be stuck on screen between turns online
-Fixed an issue that resulted in an impassible sea hex
-Fixed an issue that resulted in poison/curse particles not going away in dungeons
-Fixed an issue where backpacks would not be visible after a revive in a dungeon
-Fixed an issue where hud text when getting poisoned would appear twice
-Fixed a rare issue where mashing the options button on a controller while an adventure was starting could result in lost focus and soft lock
-Removed the ability to accidentally buy the top level pipe that would do nothing, but still spend gold
-Removed the “buy” option for pipes, which resulted in some confusion

Specific Rule Changes:

All Adventures

-Apprentice Lore Payout increased from 50% to 60%.
-Master Lore Payout increased 140% to 150%.
-Apprentice enemy health has been reduced 5% across the board.

For the King
-Chaos frequencies:
Apprentice increased from 6 to 8.
Journeyman increased from 5 to 6.
-Life Pool:
Apprentice increased from 4 to 6.
-Economy Inflation:
Apprentice reduced from 90% to 80%
Journeyman reduced from 100% to 90%

-Vexor and his Chaos Hounds on Apprentice and Journeyman have changed. In general, they've both been slowed down a bit, and do less damage. The Hounds are also less evasive, and have less crit chance.
Vexor has been made to exchange some attacks with buffs, and will also do fewer group Chaos attacks.


Dungeon Crawl
-Life Pool:
Apprentice increased from 2 to 6.
Journeyman increased from 1 to 3.
-Economy Inflation:
Apprentice reduced from 90% to 80%
Journeyman reduced from 100% to 90%

-We also added Vision Scroll to town staples on Apprentice and Journeyman that will mean they are readily available for purchase to help you find all the hidden locations.


Frost Adventure
-Life Pool:
Apprentice increased from 4 to 6.
-Economy Inflation:
Apprentice reduced from 90% to 80%
Journeyman reduced from 100% to 90%


Into the Deep
-Life Pool:
Apprentice increased from 4 to 6.
-Economy Inflation:
Apprentice reduced from 90% to 80%
Journeyman reduced from 100% to 90%