From MaGog's logs for 17 December:

NOTE! CHANGED FILE Thief™ 2: The Metal Age, downloadables, Windows installer, English (setup_thief2_2.0.0.18.exe ***TO*** setup_thief2_2.1.0.24.exe; ***TO*** 1.23 ND (gog-24); Wed, 19 Jun 2013 14:49:52 GMT ***TO*** Thu, 17 Dec 2015 11:05:44 GMT; 801,836,368 ***TO*** 807,532,024)

NOTE! REMOVED FILE Thief™ 2: The Metal Age, downloadables, Universal update (patch_thief2_2.0.1.19.exe; 2.0.1; Mon, 30 Dec 2013 10:26:01 GMT; 2,357,352)

NOTE! CHANGED Thief™ 2: The Metal Age, changelog (http://www.an-ovel.com/downloads/chg/chg_1207659001.htm)
NOTE! ADD +++ Patch 1.23 ND (17 December 2015)
NOTE! ADD +++ updated NewDark to version 1.23.

NOTE! CHANGED Thief™ 2: The Metal Age, file_size: 765 MB ***TO*** 770 MB

No flag (so far). -.-

Local multiplayer, they recently added online.

No flag yet for me too.

I checked my previous files and there were an installer and a patch for it.
Maybe GOG has updated the installer to just include the patch. Such updates are mostly silent. So, if that's the case we will never get a flag.

There's a changelog (see here) that details what the change is (briefly, updated NewDark to version 1.23).

Thanks!
I got a flag too! :-)

The Linux version of SOMA has been added, same changelog as Windows:

Patch 1.10 (16 December 2015)

Support for mod dependencies in game: a mod can be built on top of other mods without the need of messing around with resources now.
Support for mod dependencies in tools: this means tools will resolve dependencies and all added assets will become available to the user (and no more tweaking of resources.cfg file needed!)
Fixed long startup times in LevelEditor, also reduced memory footprint when using a mesh object creator (static objects, entities, detailmeshes edit modes).
Brought back random scale and rotation controls in LevelEditor.
Added some nice icons to the tools and minor bugfixes.

From MaGog's logs for 17 December:

NOTE! Probably CHANGED FILE SOMA, all_files, Mac OS X installer, English, dl_ver: 1.03 (gog-5) ***TO*** 1.10 (gog-5)

NOTE! Probably REMOVED FILE SOMA, all_files, Patch 1.02 [Mac OS X]

NOTE! Probably REMOVED FILE SOMA, all_files, Patch 1.03 [Mac OS X]

NOTE! Probably ADDED FILE SOMA, all_files, Patch 1.10 [Mac OS X]

NOTE! Probably CHANGED FILE SOMA, all_files, Linux installer, English, dl_ver: 1.03 (gog-4) ***TO*** 1.10 (gog-5)

NOTE! Probably REMOVED FILE SOMA, all_files, Patch 1.03 [Linux] (dl_ver: 1.02 (gog-2) -> 1.03 (gog-3))

NOTE! Probably REMOVED FILE SOMA, all_files, Update to patch 1.03 for Linux (dl_ver: 1.03 (gog-4))

NOTE! Probably ADDED FILE SOMA, all_files, Patch 1.10 [Linux]

NOTE! CHANGED SOMA, changelog (http://www.an-ovel.com/downloads/chg/chg_1439487606.htm)
NOTE! RMV --- This update is for the Windows version of the game.

From MaGog's logs for 17 December:

NOTE! Probably CHANGED FILE Turok, all_files, Windows installer, Italian, dl_ver: 1.4.3 (gog-2) ***TO*** 1.4.3 (gog-3)

NOTE! Probably REMOVED FILE Turok, all_files, Windows installer, English (dl_ver: 1.4.3 (gog-2))

NOTE! Probably REMOVED FILE Turok, all_files, Windows installer, French (dl_ver: 1.4.3 (gog-2))

NOTE! Probably REMOVED FILE Turok, all_files, Windows installer, German (dl_ver: 1.4.3 (gog-2))

NOTE! Probably REMOVED FILE Turok, all_files, Windows installer, Spanish (dl_ver: 1.4.3 (gog-2))

[Doesn't look right that the only language left is Italian, but I expect they're all the same file anyhow, and it's just a menu bug.]

The installer is multilingual.

I assumed as much.
Can you select any language other than Italian from the download drop down menu?

Just Italiano. :P

Clarification to my above post: You change language from the game's options.

As expected. Hopefully, Judas will sort it out later today.

I wonder if it's too much to hope that they're taking notes when they fix these sorts of things so they can tally up what kinds human errors they need to guard against if they eventually decide to improve their admin UI.