Shovel Knight: King of Cards and Shovel Knight: Showdown will (hopefully) be released on December 10.

https://yachtclubgames.com/2019/11/final-release-date-for-all-things-shovel-knight-treasure-trove/

Latest updates

Calendar

Added Heroland, December 04 2019 -Unofficial source and date from the forum-
Added Shovel Knight: King of Cards and Shovel Knight: Showdown, December 10 2019 -Unofficial source and date from the forum- (But please keep in mind that we might not see it day-1, I'm making an exception and writing it here regardless; so people can be aware of the release date)
Added Transport Fever 2, December 11 2019

Removed Age of Wonders: Planetfall - Revelations, released November 19 2019
Removed Asterix and Obelix XXL3 - The Crystal Menhir, released November 21 2019
Removed Battletech - Heavy Metal (expansion), released November 21 2019
Removed Black Future '88, released November 21 2019
Removed Blacksad: Under the Skin, released November 14 2019

Officially confirmed by GOG

Added Cold Hearts
Added The Alliance Alive HD Remastered (I'll put it in the 2020 calendar when I'll make that thread)
Added Wasteland 3
Added XIII - Remake

Moved Wrath: Aeon of Ruin to the IN DEV list

Removed Lost Ember, released November 22 2019

IN DEV

Added Iratus: Lord of the Dead
Added Wrath: Aeon of Ruin

Removed Sigma Theory: Global Cold War, released November 21 2019

Unofficially confirmed games

Added A Plague Tale: Innocence -Source: post10387
Added Stranglehold -Source: post10348
Added West of Dead -Source: post10345

Moved Cold Hearts -Source: post10312 post10335 to the officially confirmed by GOG list
Moved Iratus: Lord of the Dead -Source: post9454 post10350 to the IN DEV list
Moved Necrobarista -Source: post10313 to the officially confirmed by GOG list
Moved Shovel Knight: King of Cards (content update) and Showdown (multiplayer) -Source: post8741 forum
Moved The Alliance Alive HD Remastered -Source: post10300 to the officially confirmed by GOG list
Moved Wasteland 3 -Source: post5469 post5607 to the officially confirmed by GOG list

------------------------------------------------------------------------

A late thank you.

Latest updates


Calendar

Added Planetary Dustoff (IN DEV), December 16 2019 -Unofficial date from the developers' twitter-

Changed date of Vampire the Masquerade: Coteries of New York from December 04 2019 to December 11 2019 ( Source)

Officially confirmed by GOG

Added Builders of Egypt
Added Close to the Sun (will add it to the calendar in the 2020 thread)

Unofficially confirmed games

Removed A Plague Tale: Innocence -Source: post10387, released November 26 2019
Removed Stranglehold -Source: post10348, released November 26 2019

Latest updates

Calendar

Removed Ashen, released December 09 2019
Removed Darksiders Genesis, released December 05 2019
Removed Heroland, released December 03 2019
Removed Mosaic, released December 05 2019
Removed Shovel Knight: King of Cards and Shovel Knight: Showdown, released December 10 2019
Removed Transport Fever 2, released December 11 2019
Removed Vampire: the Masquerade - Coteries of New York, released Decmber 11 2019

Officially confirmed by GOG

Added Panzer Dragoon: Remake
Added The Dark Crystal: Age of Resistance Tactics

Removed Imperator Rome: The Punic Wars DLC, released December 03 2019
Removed Interrogation: You Will Be Deceived, released December 05 2019

Unofficially confirmed games

Added Armored Brigade -Source: post10428

Edit: Removed Wasteland 3 -Source: post5469 post5607, since I've moved it to the officially confirmed by GOG list a while ago

The game has been officially confirmed for a May 19th 2020 release (Don't forget to update your 2020 thread as well):
https://www.gog.com/forum/general/preorder_bwasteland_3b_b4df0

Thanks for pointing out it was still in the 2016 list. I'll correct it in both thread.

Latest updates


Calendar

Removed Planetary Dustoff (IN DEV), released December 16 2019

IN DEV

Added Postal 4: No Regerts

Removed Planetary Dustoff (IN DEV), released December 16 2019

Unofficially confirmed games

Added Ara Fell: Enhanced Edition -Source: post10518

Moved Postal 4 -Source: post10255 to the In DEV list