I'd be interested in learning more about this myself...

Solid...

Syberia

Update (14.08.2015)

fixed the CD/DVD prompt during the "first cylinder" cutscene.

Linux patch for Dreamfall Chapters (id: en3patch1, filename: patch_dreamfall_chapters_2.9.10.14.sh) can't be downloaded because the API response for download link is missing file extension. Downloading via browser doesn't work either because of the same issue.
Adding ".sh" file extension to the download link provided by API works.

It also has the same issue with xml data. Adding the file extension doesn't help with xml data and results in 403 error:

Where are the manuals for the Anno games? Are they just included in the new installers (and why were those updated)? That'd be insane.

Yes, that's stupid... 4GB download of 2 installers again for 2 manuals...
What is the bonus section for?

Seriously!? I quit playing when I hit that problem.

The Mac version is there but I get a 404 error when trying to download it.

From MaGog's logs for 14 August (part 2 of 2):

NOTE! CHANGED FILE Syberia, downloadables, Windows installer, English (setup_syberia_2.1.0.22.exe ***TO*** setup_syberia_2.1.0.23.exe; ***TO*** gog-23; Wed, 01 Apr 2015 22:51:37 GMT ***TO*** Wed, 12 Aug 2015 14:38:14 GMT; 1,138,429,768 ***TO*** 1,324,797,640)

NOTE! CHANGED FILE Syberia, downloadables, Windows installer, French (setup_syberia_french_2.1.0.22.exe ***TO*** setup_syberia_french_2.1.0.23.exe; ***TO*** gog-23; Wed, 01 Apr 2015 22:59:03 GMT ***TO*** Wed, 12 Aug 2015 14:37:06 GMT; 1,119,924,200 ***TO*** 1,306,004,680)

NOTE! CHANGED FILE Syberia, downloadables, Windows installer, German (setup_syberia_german_2.1.0.22.exe ***TO*** setup_syberia_german_2.1.0.23.exe; ***TO*** gog-23; Wed, 01 Apr 2015 22:54:21 GMT ***TO*** Wed, 12 Aug 2015 14:37:52 GMT; 1,129,588,704 ***TO*** 1,223,038,816)

NOTE! CHANGED FILE Syberia, downloadables, Windows installer, Italian (setup_syberia_italian_2.1.0.22.exe ***TO*** setup_syberia_italian_2.1.0.23.exe; ***TO*** gog-23; Wed, 01 Apr 2015 22:55:53 GMT ***TO*** Wed, 12 Aug 2015 14:37:30 GMT; 1,121,880,232 ***TO*** 1,215,201,176)

NOTE! CHANGED FILE Syberia, downloadables, Windows installer, Russian (setup_syberia_russian_2.1.0.22.exe ***TO*** setup_syberia_russian_2.1.0.23.exe; ***TO*** gog-23; Wed, 01 Apr 2015 23:00:29 GMT ***TO*** Wed, 12 Aug 2015 14:40:57 GMT; 1,126,324,736 ***TO*** 1,313,963,304)

NOTE! CHANGED FILE Syberia, downloadables, Windows installer, Spanish (setup_syberia_spanish_2.1.0.22.exe ***TO*** setup_syberia_spanish_2.1.0.23.exe; ***TO*** gog-23; Wed, 01 Apr 2015 22:50:29 GMT ***TO*** Wed, 12 Aug 2015 14:41:19 GMT; 1,114,226,672 ***TO*** 1,207,658,384)

NOTE! CHANGED Syberia, changelog (http://www.an-ovel.com/downloads/chg/chg_1207658848.htm)
NOTE! ADD +++ Update (14.08.2015)
NOTE! ADD +++ fixed the CD/DVD prompt during the "first cylinder" cutscene.

NOTE! CHANGED Syberia, file_size: 1.1 GB ***TO*** 1.2 GB





NOTE! CHANGED FILE Telepath Tactics, downloadables, Windows installer, English (setup_telepath_tactics_2.15.0.17.exe ***TO*** setup_telepath_tactics_2.16.0.18.exe; 1.041 (gog-17) ***TO*** 1.042 (gog-18); Mon, 10 Aug 2015 11:44:07 GMT ***TO*** Fri, 14 Aug 2015 08:10:00 GMT; 156,508,704 ***TO*** 156,508,712)

NOTE! CHANGED FILE Telepath Tactics, downloadables, Mac OS X installer, English (telepath_tactics_2.14.0.22.dmg ***TO*** telepath_tactics_2.15.0.23.dmg; 1.041 (gog-22) ***TO*** 1.042 (gog-23); Fri, 07 Aug 2015 14:39:05 GMT ***TO*** Fri, 14 Aug 2015 08:40:38 GMT; 162,210,173 ***TO*** 162,211,874)

NOTE! CHANGED Telepath Tactics, changelog (http://www.an-ovel.com/downloads/chg/chg_1428918226.htm)
NOTE! ADD +++ Patch 1.042 (14.08.2015)
NOTE! ADD +++ fixed a bug where the game would scale inappropriately on monitors without standard widescreen dimensions, leading to important parts of the visual field getting cut off.
NOTE! ADD +++ fixed a bug where the game would turn fullscreen scaling off after every battle.
NOTE! ADD +++ fixed a bug where the game was not correctly saving the name of procedurally generated levels when saving the game using the new system.
NOTE! ADD +++ fixed a parsing issue with items that add tags.
NOTE! ADD +++ removed commas from certain items’ descriptions to avoid parsing errors.
NOTE! ADD +++ fixed incorrect description on Caffeine Pills.
NOTE! ADD +++ fixed a bug that prevented Caffeine Pills from successfully removing the effects of Slowed status, Eyedrops from successfully removing the effects of Blinded status, etc.
NOTE! ADD +++ gave +1 range to Place Charges for Engineers who promote to Machinist.
NOTE! ADD +++ made it so characters with a base Dodge of 80 or higher no longer gain Dodge upon leveling up.
NOTE! ADD +++ updated scripting in the final battle to make Tarion and his escorts more proactive / aggressive when approached by the player; buffed the snipers on the rock pillars in the lava.
NOTE! ADD +++ fixed a bug that would sometimes cause the wrong character to get grayed out if an enemy character’s turn ended with that character dying from an attack or a trap.
NOTE! ADD +++ fixed a typo that prevented Armor Rend from ever succeeding in softening the target.
NOTE! ADD +++ new tag: StatFXIgnoreRes. Makes it so status effects’ chance to hit is not impacted by the target’s resistance to the attack element.
NOTE! ADD +++ added StatFXIgnoreRes as a tag characters receive upon equipping axes or a halberd, thus making the status effects of Armor Rend (and, for Mantis Knights with a halberd equipped, Charge) dramatically more likely to succeed against armored targets.
NOTE! ADD +++ fixed a bug in Normal mode where Scarlet Etoile could end up having dialogue after the caravan battle if she was both recruited and killed during the fight.
NOTE! ADD +++ fixed a bug in Normal mode where Louise’s portrait could remain onscreen inappropriately after the Adelbrae battle if Farasat was killed in the fight.

NOTE! CHANGED Telepath Tactics, file_size: 150 MB ***TO*** 153 MB

From MaGog's logs for 14 August:

NOTE! CHANGED FILE Dreamfall Chapters [Season Pass], downloadables, Patch 3.0.5.0 [Linux] (patch_dreamfall_chapters_2.9.10.14 ***TO*** patch_dreamfall_chapters_2.9.10.14.sh; no change in installer version; unknown ***TO*** Thu, 13 Aug 2015 11:05:50 GMT; 0 ***TO*** 355,429,715)

[One of the extensionless broken links fixed]

From MaGog's logs for 14 August:

NOTE! CHANGED FILE Alone in the Dark: The Trilogy 1+2+3, downloadables, AITD 2 Mystery Examiner (aitd_2_newspaper.zip ***TO*** aitd_2_mystery_examiner.zip; Thu, 14 May 2015 15:21:38 GMT ***TO*** Mon, 10 Aug 2015 12:00:52 GMT; 3,902,840 ***TO*** 3,902,569)

[No flag, no changelog. Apparently the bonus was rescanned to restore some words that had been cut off at the right edge, especially on page 4. Thank you, Judas or whoever, for this. I greatly appreciate this attention to quality.]

From MaGog's logs for 15 August:

NOTE! CHANGED FILE Risk of Rain, downloadables, Mac OS X installer, English (risk_of_rain_2.2.0.8 ***TO*** risk_of_rain_2.2.0.8.dmg; no change in installer version; unknown ***TO*** Fri, 31 Jul 2015 09:21:56 GMT; 0 ***TO*** 80,226,211)

[The second extensionless broken link fixed]