Games counted today:

SCPM's 3000 list Extended edition: 1
Tempest

The post by SCPM is here.

Ooooops! Forgot to add yesterday:

Games counted yesterday:

SCPM's scrapped list: 1
Dwarves, The

The recently-released Besiege is from the same list.

In addition, SCPM found about CivCity: Rome and Civilization III before they were released:
https://www.gog.com/forum/general/gog_just_tweeted_this_what_could_it_be/post161

You do, by already including Factorio. :P

Thanks for bringing my attention to that fact. I added it in june thinking it was an official release then (and seeing it wasn't)... and then I must have assumed it would release before the end of the year (thinking it was far along enough in development to see a 2016 release). I'm going to remove Factorio as a game that released this year. Again thanks for bringing my attention to this.

Game removed today:

Barry's indie list: 1
478. Factorio

SCPM's 3000 list: 1
Factorio

If you, or anybody else, see other mistakes don't hesitate to point them out.

You can add Tron 2.0 to this list. Now, only 5 more games remain. Such a shame, though; if this year had one more month, there would be a chance that the list would be completed.

Games counted today:

SCPM's 3000 list: 1
Tron 2.0

So the year is done, and so is this thread. I'm really pleased with a lot of the games that came here from these lists. It would have been nice to see some more of the jiangshanruhua's listed games here, maybe in the upcoming years.

Here's some tally from the end of 2016:

SCPM's true or false 3000 list in the unofficially confirmed thread + all the other ?%&*?*&?* titles he finds this year ;P
List of: 29 games
Released: 24 (82.76% released)
Counting the 2 IN DEV: 89.66% released

Games still to be released:

Besiege (IN DEV)
Factorio (IN DEV)
Forsaken
Hammer And Sickle
Way Of The Samurai 3

The ?&*?&?*&?&* titles he and others found this year (using the same 3000 list trick) those games were only counted when they actually released meaning they'd increase both the number of games released and also the number of games found by SCPM, which sits currently at 29):

Oblivion (found by mobutu)
Postal 2: Paradise lost (found by fronzelneekburm)
State of Decay Year-One Survival Edition (found by SCPM)
Steamworld Heist(found by SCPM)
Stranded Deep (found by Emob78)

SCPM's scraped up list in the unofficially confirmed thread
List of: 78 games
Released: 37 (47.44% released)
Counting the 4 IN DEV: 52.56%
Counting the 3 Upcoming: 51.28%
Counting 4 IN DEV + 3 Upcoming: 56.41%

Games still to be released:

Astroneer
Besiege (IN DEV)
BIT.TRIP Runner 2: Good Friends Character Pack
Black Annex
Bounty Train (IN DEV)
Caladrius Blaze
Codename Panzers: Cold War
Defender's Quest II
Demon Age
Descent Underground (IN DEV)
Dragon Fin Soup
Excubitor
Expeditions: Viking
Fallout: New Vegas Ultimate Edition
Future Unfolding
Grav
Gremlins, Inc.
Kill to Collect
Life is Feudal: Your Own
Medieval Engineers
Niffelheim
Outlast 2 (Upcoming)
Planetary Annihilation: TITANS
Savage Lands
Sea Dogs City of Abandoned Ships
"Seawolf" = Gwent (Upcoming, but not in the Upcoming list)
Senran Kagura Shinovi Versus
Slime Rancher (IN DEV)
Space Engineers
Stardrive
Stardrive 2
Sully: A Very Serious RPG
The Elder Scrolls IV: Oblivion - GOTY Edition
The Mandate
The Pit
The Political Machine 2016
The Unreleased
Town of Light
Upwards, Lonely Robot
Yooka-Laylee (Upcoming)
Zeno Clash

jiangshanruhua's leaked list in the true or false thread
List of: 69 games
Released: 12 (17.39% released)

Barry_Woodward's 2016 Indie games list
List of: 590 games
Released: 42 (7.12% released)

A special thanks to the peeps that corrected my multiple errors, it was greatly appreciated.

Thank you for keeping track of all this! It's a shame not much else came of jiangshanruhua's list, there would've been some spectacular releases from there. And all the digging around I had been doing was just trying to find evidence to support that list. I guess the closest I came was finding that entry for Fallout: New Vegas, a Steamworks title, which meant that there was hope for a release of Skyrim here (and potentially Bethesda's other Steamworks games).
It is quite peculiar how the list got some things right. 2K Games did start to release titles here, EA and Activision released titles again after a long hiatus, and there weren't any Square-Enix titles on the list which proved accurate. =\
The only other entries I'm not sure about are the ones for 'The Pit' (can't find any information about any game with this title) and 'The Unreleased' (which sounds like some internal note and not a game title).