Judas said there will be an update for the main installer (which will be 4 GB after that).

http://www.gog.com/forum/general/the_what_did_just_update_thread/post9537



Thanks for the change log.

Wanted to mention for Old Humble customers, that Linux version of Trine 1 E is added too.

See the initial post for a changelog update (it's still the same file though).

Trine 3: The Artifact of Power

Changelog for patch 1.00 build 2995 (added 20 August 2015):

- Added full version 1.00


Changelog for patch 1.01 build 3005 (added 24 August 2015):

- Hotfix for double cursor and online multiplayer issues


Changelog for update 1.10 build 3080 (added 05 November 2015):

- Added the Linux version of Trine 3: The Artifacts of Power.

Levels:
- Added a new level "The Quest for Cake" !
- Added similar checkpoint logic to Lost Pages levels than Tutorial levels have, now you can die during the level and continue without restarting the whole level
- Fixed and tweaked lots of small gameplay issues in all levels
- Fixed some broken AI navigation mesh data in various levels

Gameplay:
- Amadeus (Wizard) accurate or companion levitation cannot be started while not on ground ("the Wizard box exploit")
- Fixed issue where Amadeus (Wizard) could pick up objects with zero input
- Fixed issue where wallhead projectiles cut the Zoya's grappling hook
- Fixed issue where ALT+TAB could result missing characters
- Tweaked new level indicator in playable map scene
- Tweaked Trineangles visual deletion to be instant instead of delayed

Player characters:
- Fixed issue where crouching could cause movement stuck
- Tweaked player character skills
- Tweaked player wall jumping so that exploiting wouldn't occur
- Tweaked surface jumps from water (now instant, not delayed)

Technical:
- Re-built the game data due to some engine level changes which leads to big update
- Fixed crash issues which could occur when changing characters (rapidly)
- Fixed rare crash issues with physics objects (when physics contact happened)
- Fixed rare crash issue which could occur when levitating objects with Amadeus (Wizard)
- Fixed memory leak issues with AI navigation mesh data

Optimizations:
- Added (minor) optimizations all over the gameplay and engine logic while working on other platforms :)
- Batched model particles to single draw call
- Optimized AI navigation mesh data sizes

Online multiplayer:
- Added a failsafe logic if online multiplayer game server doesn't respond so that game wouldn't jam into "Refreshing..." window
- Fixed issue where game used Local Area Network (LAN) for online games if GOG login failed

Rendering:
- Fixed sway which was randomly disabled sometimes

GUI:
- Fixed loading screen glitching when changing save slots or deleting them
- Fixed missing character when deleting a save slot
- Fixed save slot menu issues (correct localization)
- Fixed duplicate data in level's checkpoint menu
- Fixed game console issues (console can be opened from F8 button)
- Fixed incorrect tooltips when using user binds
- Tweaked level's checkpoint menu (automatically scale to correct size)

Cinematics:
. Fixed minor issues with the intro cinematic (polished scene, no more holes in the geometry, no more characters running through the walls etc.)

Input:
- Added hardware cursor to be in use by default (can be changed from options.txt, InputModule::OSCursorVisible)
- Fixed console (F8) arrow key issues (left/right
- Fixed some rare double input issues with backspace button and input in general)
- Fixed cursor hide/show issues when using ALT+TAB
- Fixed cursor hide/show issues in general
- Fixed input disabling/enabling issues during cinematics
- Fixed Nvidia Shield Controller issues

Achievements:
- Fixed issue where Trineangle related achievements were only unlocked on level exit, now they are unlocked when last one is collected in a level
- Fixed incorrectly awarded achievements in online multiplayer game

Stereo 3D:
- Fixed Stereo 3D feature available pop up which was missing
- Fixed Trine 3: The Artifacts of Power main menu logo which stuck on screen when Stereo 3D was enabled

Save & Load:
- Fixed end boss issues if player quit the game during the end boss and resumed game later on

Localization:
- Added Finnish text localization!
- Fixed issue where missing localization caused game to be unplayable
- Fixed missing Turkish characters

Effects:
- Fixed infinite looping effects when owner object had been already deleted

Audio:
- Fixed missing speeches in various levels for all languages

PhysX:
- Re-built PhysX 3.3.3 libraries to fix rare physics issues

Launcher:
- Fixed issues where some of the text didn't fit to launcher in various languages

Not sure if this has to be fixed in the installer/game/launcher or be specified somewhere but the game (or more specifically, the launcher) doesn't run on a 64bit linux distribution without i386 gtk+ libs installed: So... ...the fix is to install libgtk2.0:i386 Done!

Trine 3: The Artifacts of Power

Patch 1.11 build 3091 (27 November 2015)
Technical

Fixed rare crash issues
Fixed out of memory issues if stayed too long in the same level
Fixed minimum OS X version information from OS X 10.8 to OS X 10.9

Optimizations

Added rendering quality logic for OS X and Linux builds (launcher graphical settings now actually changes the looks of the game)
Added lots of small optimizations around the engine and gameplay logic
Optimized Zoya (Thief) grappling hook

Rendering

Fixed Russian font for OS X and Linux

Online Multiplayer

Fixed issue where boss level fire balls didn't work if FPS was too low

Levels

Tweaked "The Quest for Cake" level (lot's of small gameplay issues fixed which were reported by users)

Gameplay

Tweaked Amadeus (Wizard) levitation logic (objects can now be taken as companion even when character is not on ground)
Tweaked Zoya (Thief) grappling hook

Input

Added missing selectLevel bind into input menu (you can now configure the enter chapter bind)
Fixed input issues on OS X when game was started (ALT+TAB / CMD+TAB issue)
Fixed input issues with Steam on-screen keyboard

Info

All v1.11 (Steam, GOG, Humble and App Store) builds are online multiplayer compatible with this build (check the version number from game's main menu)

Patch 1.11 build 3102 (20 July 2016)
Technical

Optimized the start up time (it still can be 30-60 seconds depending on your MAC hardware but it surely shouldn't be 3 - 10minutes anymore (or infinite))
Optimized shaders to prevent FPS issues on some Linux users (you should also update your official GPU drivers!)
Optimized the game a bit
Added a feature which drops the resolution if on laptop battery mode (windows only)
Added missing Finnish language to the launcher
Launcher language didn't show correctly selected language

Launcher

Fixed launcher close issues (launcher application didn't close properly when CANCEL or close application was pressed)
Fixed windows launcher Stereo 3D default value which was always CUSTOM by default.

Info

All v1.11 (Steam, GOG, Humble and App Store) builds are online multiplayer compatible with this build (check the version number from game's main menu)
Localization
Added Turkish text localization

Public Editor

Fixed missing binds when editor was started (old editor installs requires editor re-install)
Fixed bunch of missing files like ragdoll configurations (-.ragd) and animation set configurations (-.ats) (old editor installs requires editor re-install)
Fixed bunch of errors (seen in editor OUTPUT window) (old editor installs requires editor re-install)

How to re-install:

Delete "editor_path.txt" file from your Trine 3: The Artifacts of Power installation folder
After deletion start the editor and re-install it

Trine 3: The Artifacts of Power

Changelog for installer update / (Mac) (added 16 December 2017):

- Installer update - No game files were changed.

Did this happen yet? In my library there's still old game version and patch, but not updated version.