According to gogdb, the game is currently up to date - it was updated the day after your post and has been relatively current since.

I can confirm that the GOG version has the option for hungarian (magyar) as well.

German
English
Spanish
French
Hungarian
Italian
Korean (I guess)
Polish
Russian
Turkish
Japanese
Chinese

Perfect, thanks the lot! Then the only issue of the game is the lack of a discount bundle

Residual was already removed from the list.

Alien Shooter 2: Reloaded has now the Russian language available.

Both Earthworm Jim 1 & 2 have received their Mac and Linux builds on GOG

On the spreadsheet, change the name of " M.A.X. " to " M.A.X. + M.A.X. 2 " and then specify that only the first game as that issue. They're no longer available for individual purchase.

As for the Realms of Arkania trilogy for DOS, why is the absence of a Dosbox Linux version indicated as "unconfirmed"? The store pages on GOG very clearly don't indicate that there's a Linux Dosbox available for download, how is confirmation needed?

I know that the owner of the spreadsheet is keeping track of this thread, but still, I decided to gather all recent updates on pastebin. Could be useful for other users who have lost track of recent updates.