Yes, that's all that is in the changelog.

I've created a changelog thread for Machinarium:

https://www.gog.com/forum/machinarium/changelog

Wait, they don't even bother telling us about new platforms for games? >_<

From MaGog's logs for 8 July (part 1 of 2):

NOTE! ADDED FILE Machinarium Collector's Edition, downloadables, Tarball archive, English (gog_machinarium_1.0.0.1.tar.gz; gog-1; Tue, 07 Jul 2015 15:49:30 GMT; 360,498,290)

NOTE! CHANGED Machinarium Collector's Edition, changelog (http://www.an-ovel.com/downloads/chg/chg_1207659017.htm)
NOTE! ADD +++ Update (08.07.2015)
NOTE! ADD +++ We have added the Linux version of Machinarium.

NOTE! CHANGED Machinarium Collector's Edition, os: Windows (XP, Vista, 7, 8) and Mac OS X (10.6.8 or newer) ***TO*** Windows (XP, Vista, 7, 8) and Mac OS X (10.6.8 or newer) and Linux (Ubuntu 14.04, Mint 17)

NOTE! CHANGED Machinarium Collector's Edition, sys_req_win: Windows XP / Vista / Windows 7, 1.8 GHz Processor, 768 pixels minimum vertical resolution, 1 GB RAM, 380GB HDD ***TO*** Windows XP / Vista / 7 / 8, Processor: 1.8 Ghz, Display: 768 pixels minimum vertical resolution, Memory: 1 GB RAM, Hard drive space: 380 MB

NOTE! CHANGED Machinarium Collector's Edition, sys_req_linux: ***TO*** Ubuntu 14.04, Mint 17, Processor: 1.8 Ghz, Display: 768 pixels minimum vertical resolution, Memory: 1 GB RAM, Hard drive space: 380 MB, Requires the following packages to be installed: libc6:i386 libasound2:i386 libasound2-data:i386 libasound2-plugins:i386 libgtk2.0-0:i386 libcurl3:i386 libnss3:i386 libxt6:i386 and dependencies, Notice: this game comes with a 32-bit binary only





NOTE! CHANGED FILE Screencheat, downloadables, Windows installer, English (setup_screencheat_2.6.0.8.exe ***TO*** setup_screencheat_2.7.0.9.exe; 2.1 (gog-8) ***TO*** 2.1.5 (gog-9); Tue, 19 May 2015 14:44:29 GMT ***TO*** Wed, 08 Jul 2015 11:50:58 GMT; 386,130,384 ***TO*** 396,285,120)

NOTE! CHANGED FILE Screencheat, downloadables, Mac OS X installer, English (screencheat_2.5.0.18.dmg ***TO*** screencheat_2.6.0.19.dmg; 2.1 (gog-18) ***TO*** 2.1.5 (gog-19); Tue, 19 May 2015 14:43:41 GMT ***TO*** Wed, 08 Jul 2015 11:51:34 GMT; 459,828,512 ***TO*** 460,802,754)

NOTE! CHANGED FILE Screencheat, downloadables, Tarball archive, English (gog_screencheat_1.6.0.10.tar.gz ***TO*** gog_screencheat_1.7.0.11.tar.gz; 2.1 (gog-10) ***TO*** 2.1.5 (gog-11); Tue, 19 May 2015 14:43:54 GMT ***TO*** Wed, 08 Jul 2015 11:52:02 GMT; 458,195,313 ***TO*** 468,466,744)

NOTE! REMOVED FILE Screencheat, downloadables, Linux installer, English (gog_screencheat_1.6.0.10.deb; 2.1 (gog-10); Tue, 19 May 2015 14:42:37 GMT; 371,693,080)

NOTE! CHANGED Screencheat, changelog (http://www.an-ovel.com/downloads/chg/chg_1207666493.htm)
NOTE! ADD +++ Patch 2.1.5 (08.07.2015):
NOTE! ADD +++ Bomb Assault Design Revision:
NOTE! ADD +++ We’ve changed Bomb Assault up a bit to increase aggressive play and speed up the game flow.
NOTE! ADD +++ Default Score to win is now 4
NOTE! ADD +++ Points are now given per base destroyed instead of rounds won
NOTE! ADD +++ Base player respawn set to 3 seconds
NOTE! ADD +++ Each death increases that players respawn time by 1 second, resetting when the round ends
NOTE! ADD +++ Improved Base positioning on Garden Steeples
NOTE! ADD +++ 6-8 player games now have 3 bombs instead of 2
NOTE! ADD +++ You can no longer pick up a bomb after you’ve died
NOTE! ADD +++
NOTE! ADD +++ Bugfixes and Improvements:
NOTE! ADD +++ Mutator picker now added to Party Mode and Team Party Mode
NOTE! ADD +++ Disconnected state of controllers is now clearly displayed in game
NOTE! ADD +++ Profile XP and level will now be visible in the profile menu
NOTE! ADD +++ Respawn timers will no longer show when players are eliminated from a round based mode ie. Bomb Assault or Elimination
NOTE! ADD +++ Folded the Sweet Katana 10 grillion times over
NOTE! ADD +++ Minor performance improvements in some areas
NOTE! ADD +++ Look sensitivity capped at 30
NOTE! ADD +++ Weapon Selection mode removed from One Shot customisation
NOTE! ADD +++ Fixed bug in round based modes showing “Waiting for next round” inappropriately
NOTE! ADD +++ The wall_Hacker now works correctly in One Shot
NOTE! ADD +++ Close the in-game scoreboard on Game Over
NOTE! ADD +++ Allow cancelling profile select in Lobby with ESC or (B)
NOTE! ADD +++ Fix pickup prompt not clearing when you get killed
NOTE! ADD +++ Fix UI layering of Murder Mystery cards online
NOTE! ADD +++ Disable renaming Default/Inverted profiles
NOTE! ADD +++ Stop counting friendly fire towards multi-kills
NOTE! ADD +++ Allow scrolling credits with controller
NOTE! ADD +++ Add all on/off buttons to map selectors
NOTE! ADD +++ Party mode: move mode selector to a sub-menu
NOTE! ADD +++ Show which player paused when in-game
NOTE! ADD +++ Restrict input on other controllers when a player has paused
NOTE! ADD +++ Sped up scene fade transition
NOTE! ADD +++ Add a confirm prompt when trying to quit to Lobby from in-game
NOTE! ADD +++ Add new settings to modify for updated Bomb Assault ruleset
NOTE! ADD +++
NOTE! ADD +++ Known Issues
NOTE! ADD +++ The first weapon you use in a round will not have a custom skin applied until it is switched.
NOTE! ADD +++ Disconnecting two or more controllers in a row and then reconnecting them may cause issues.
NOTE! ADD +++
NOTE! ADD +++
NOTE! ADD +++ Patch 2.1.3 (08.07.2015):
NOTE! ADD +++ New Unlockable Content
NOTE! ADD +++ New Candelabra Skin: Cod of Duty (unlocked at level 10)
NOTE! ADD +++ New Candelabra Skin: Sweet Katana (unlocked at level 55)
NOTE! ADD +++ New Bear Bomb Skin: Spider Bomb (unlocked at level 60)
NOTE! ADD +++ New Chefolet Skin: Power Gloves (unlocked at level 65)
NOTE! ADD +++ New Mutators
NOTE! ADD +++ Australian Edition
NOTE! ADD +++ Martyrdom
NOTE! ADD +++
NOTE! ADD +++ Bugfixes and Improvements:
NOTE! ADD +++ Various optimisations across all maps
NOTE! ADD +++ Optimisation to grass in Garden
NOTE! ADD +++ Fix lighting issues in Museum
NOTE! ADD +++ Added headbob animation when players land from a fall
NOTE! ADD +++ Prevent kill message pop-ups from overlapping
NOTE! ADD +++ Fix player name tags being visible after dying in Elimination
NOTE! ADD +++ Fix Bomb Assault arming meter freezing when pausing the game
NOTE! ADD +++ General fixes and improvements to controller UI
NOTE! ADD +++ Speed up dpad/arrow key navigation
NOTE! ADD +++ Unify animations across UI for sub-menus
NOTE! ADD +++ Player Options: Show who a player is sharing a connection with
NOTE! ADD +++ Training: Players must select a profile
NOTE! ADD +++ Training: When slotting, the last mission that you need to earn a medal on will be automatically selected
NOTE! ADD +++ Training: Improvements to UI
NOTE! ADD +++ Training: Show number of kills in endless mode
NOTE! ADD +++ Training: Some mission times tweaked
NOTE! ADD +++ Fix getting stuck on black screen when quitting to lobby
NOTE! ADD +++ Fix being able to jump when scoreboard is open
NOTE! ADD +++ Fix game mode menu scrolling upon returning to lobby
NOTE! ADD +++ Show respawn timer when waiting to respawn
NOTE! ADD +++ Added respawn time as a game setting
NOTE! ADD +++ Bomb Assault: Increased respawn time
NOTE! ADD +++ Bomb Assault: Added an arming/disarming sound
NOTE! ADD +++ Bomb Assault: Fixed some spawn points so they don’t overlap with base positions
NOTE! ADD +++ Fix player guns sometimes becoming invisible in team modes
NOTE! ADD +++ Fix profile name being overwritten when playing Training with Quickplay enabled
NOTE! ADD +++ Added sound to Flappy Jump mutator
NOTE! ADD +++ Show campers functionality can now show players holding objective pickups
NOTE! ADD +++ Visible Ragdolls mutator improved so that they aren’t stuck in the ground
NOTE! ADD +++ Fix an exploit where you could rematch and win instantly in team modes when one team left
NOTE! ADD +++ Fix being able to change teams when typing in chat box
NOTE! ADD +++ Fix unlock ribbon and level up labels not disappearing in between rounds
NOTE! ADD +++ Fix Trappeur laser origin positioning
NOTE! ADD +++ Fix being able to unlock level achievements from remote players levelling up
NOTE! ADD +++ Fix Spider ragdoll freaking out
NOTE! ADD +++ Folded the steel of the katana 10 trillion times over
NOTE! ADD +++ Reset screenshake on respawn

From MaGog's logs for 8 July (part 2 of 2):

NOTE! CHANGED FILE DEFCON, downloadables, Mac OS X installer, English (defcon_1.0.0.3.dmg ***TO*** defcon_2.0.0.13.dmg; gog-3 ***TO*** gog-13; Wed, 17 Oct 2012 15:09:58 GMT ***TO*** Wed, 08 Jul 2015 11:36:20 GMT; 67,949,283 ***TO*** 80,229,946)

NOTE! CHANGED DEFCON, changelog (http://www.an-ovel.com/downloads/chg/chg_1207659075.htm)
NOTE! ADD +++ Update gog-13 (08.07.2015):
NOTE! ADD +++ We have uploaded a new Mac build of DEFCON that offers better offline functionality.





NOTE! REMOVED FILE To The Moon, downloadables, Windows installer, English (setup_to_the_moon_2.0.0.4.exe; ; Wed, 22 Jan 2014 16:09:48 GMT; 81,504,536)

NOTE! REMOVED FILE To The Moon, downloadables, Windows installer, French (setup_to_the_moon_french_2.1.0.5.exe; ; Tue, 04 Nov 2014 17:30:07 GMT; 81,012,912)

NOTE! REMOVED FILE To The Moon, downloadables, Windows installer, Polish (setup_to_the_moon_polish_2.0.0.4.exe; ; Tue, 06 May 2014 13:53:30 GMT; 80,732,256)

NOTE! REMOVED FILE To The Moon, downloadables, Windows installer, Portuguese (setup_to_the_moon_portuguese_2.0.0.4.exe; ; Tue, 06 May 2014 13:53:34 GMT; 81,159,944)

NOTE! REMOVED FILE To The Moon, downloadables, Windows installer, Spanish (setup_to_the_moon_spanish_2.0.0.4.exe; ; Tue, 06 May 2014 14:01:24 GMT; 81,103,936)

NOTE! ADDED FILE To The Moon, downloadables, Windows installer, English+French+Polish+Portuguese+Spanish (setup_to_the_moon_2.0.0.4.exe; gog-4; Wed, 22 Jan 2014 16:09:48 GMT; 81,504,536)

NOTE! ADDED FILE To The Moon, downloadables, Mac OS X installer, English+French+Polish+Portuguese+Spanish (to_the_moon_2.0.0.1.dmg; gog-1; Wed, 08 Jul 2015 15:17:50 GMT; 106,983,605)

NOTE! CHANGED To The Moon, changelog (http://www.an-ovel.com/downloads/chg/chg_1207659072.htm)
NOTE! ADD +++ Update gog-1 (08.07.2015):
NOTE! ADD +++ We have added the Mac version of To The Moon.

[And made what was previously the monolingual English Windows installer into a multilingual installer? Which is surprising considering that the French/Polish/Portuguese/Spanish had newer dates than the English one...]

I've created a changelog thread for To The Moon:

https://www.gog.com/forum/to_the_moon/changelog

I have to say that it's quite confusing that the updates for different platforms have different version numbers. To the Moon on Windows is GOG-4 while Mac version is GOG-1. Wouldn't it be more convenient to use the Windows version number for all platforms (of course only if no platform is missing a patch or update)?

Not exactly. I believe the flag you (and I) got a few hours ago is for today's Mac update. not for yesterday's (probably minor) Windows update. No big deal, though -- one flag is as good as another.

I got two flags for DEFCON. One for the Windows version two days ago and one for the Mac version today.

you're probably right, but since for users still using the downloader got issues with this game & the last update, i though the notification was for windows (since you reported a different file size for the windows installer). It was a bit misleading. (not from you of cource ;) )

i just don't like , the notification system which doesn't tell you if the version is for windows , mac or linux, you need to check the changelog ....

Me too. There was one more (probably minor) change in the middle (yesterday), which got no flag. No big deal.

Since you're here, could you please take a look at my post above (http://www.gog.com/forum/general/the_what_did_just_update_thread/post9612) and make sure that your changes to the windows installers (removing all the separate monolingual installers and leaving only the previous English installer as the multilingual installer) were indeed as intentioned. Thanks.

i don't get it , i have a french installer which is 2.1.0.5 (would be gog-5) , now it's gone from the website.... most likely an error ; it was a different version. and different file size,

It does look suspicious, which is why I asked Judas about it in the post preceding yours. Let's see what he thinks.