Heroes of Might and Magic 2

Changelog for update 2.1 / GOG-29 (27.07.2015):

- We have added the German version of Heroes of Might and Magic 2: Gold. A big "Thank you!' goes out to Rungen for the German version of the game.
- The DOS Music selector patch has been incorporated into the main installers for all three languages. After updating via GOG Galaxy or installing from the offline GOG installers, you will see a "Music selector" item in your Start menu just under the shortcut for the main game.
- The Windows version of the patch remains the same.

Heroes of Might and Magic

Changelog for update 20160531 / GOG-45 (Windows) (added 31 May 2016):

- We've fixed an issue with the in-game movies not playing properly.

Heroes of Might and Magic® 3: Complete

Changelog for update 4.0 (A) (added 22 March 2017):

- Added support for Cloud Saves in GOG Galaxy 1.2 and newer

Heroes of Might and Magic® 3: Complete

Changelog for Update 4.0 (3.2) (added 09 November 2018):

- added Polish version of the game
- added dummy IFC20.dll file to French version, for HD Mod compatibility (not included)


Heroes of Might and Magic® 4: Complete

Changelog for Update 3.0 (added 09 November 2018):

- added Polish version of the game


Heroes of Might and Magic® 5: Bundle - HOMM 5 + Hammers of Fate and Tribes of the East

Changelog for Update 2.1 (added 09 November 2018):

- added Polish version of the game

It was about fucking time, considering CD Projekt made Heroes 3/4 Polish versions in the first place :P

Heroes 4 - yes. Heroes 3 - no.

This seems to disagree.

This is getting a little bit off-topic, but I'll give a full answer. Extra Klasyka edition that you linked was a re-release. Heroes 3 was originally published by Mirage, that later became a part of IM Group, that in turn became a part of Cenega.
Basically, Heroes 3 went through most possible publishers in Poland (most recent boxed collection is published by Ubisoft), and all use the same original Mirage translation.

Heroes of Might and Magic® 3: Complete

Changelog for Update (added 16 April 2019):

- addedd Russian version of the game


Heroes of Might and Magic® 5: Bundle - HOMM 5 + Hammers of Fate and Tribes of the East

Changelog for Update (added 16 April 2019):

- addedd Russian version of the games

Heroes of Might and Magic® 2: Gold

Changelog for Internal Update (added 27 May 2019):

- [WINDOWS] fixed music track selection not working in DOS launcher;

Heroes of Might and Magic® and Heroes of Might and Magic® 2: Gold

Changelog for Update (added 08 November 2019):

- added Polish version

Standalone installers updated: 1.2 ⇒ 1.2 (1.1) and 1.0 hotfix ⇒ 1.01 (2.1), respectifully.

Thanks for adding Polish versions of Heroes 1 & 2, but you should also investigate Heroes 5 + Hammers of Fate - unlike other language versions, Polish version of this game appears to be based on the standard build instead of collector's one and because of this, some content is missing. I already mentioned this issue here.