Changelog for Patch 1.1.1.1 (added 10 August 2018):

* Fixed text display in Chinese version.
* Improved mobility in certain fields/areas.
* Fixed bug causing character to fall through/get stuck in terrain under certain conditions.
* Fixed bug making it impossible to fight certain Room Guardians again after warping during battle.
* Also fixed bugs preventing gates from opening and preventing Guardians from appearing.
* Fixed bug preventing events from occurring under certain conditions.
* Fixed bug causing processing to slow down heavily and preventing recording while using TextTrax.
* Fixed/adjusted text.
* Adjusted behaviors of some Guardians/Room Guardians/other enemies.
* Fixed bug causing problems with graphic display under certain conditions.
* Fixed other issues concerning graphics, rendering, small bugs, etc.

Just so everyone knows, there's apparently a hugely game-breaking bug that's been introduced in the patch concerning the Griffin miniboss in Heaven's Labyrinth: the game now doesn't properly register it as defeated.

I can confirm that the griffin cannot be beaten right now.

There's a way to work around the griffin bug, thankfully. Go into your game's settings in Galaxy, and disable automatic updates. That'll give you the option to revert to 1.0.0.1, allowing you to beat the griffin and collect the reward normally. You can save/quit, update the game back to 1.1.1.1 as needed, and continue on as normal. This process didn't invalidate my saves, but it'd be a good idea to make backups anyways.

Changelog for Patch 1.3.3.1 (added 29 August 2018):

* Fixed bug preventing gates from opening, and absorbing the same dissonance twice.
* Fixed/adjusted bug again causing character to fall through/get stuck in terrain under certain conditions.
* Fixed bug preventing shield update after buying new shield.
* Fixed bug causing BGM problems after manipulating Enga Musica under certain conditions.
* Fixed bug causing platform issues after changing costumes under certain conditions.
* Fixed bug causing freeze after warping with a fairy.
* Fixed/adjusted text.
* Fixed other small bugs.

Changelog for Patch 1.4.4.1 (added 23 November 2018):

* Optimized certain processing.
* Fixed gamepad compatibility and behavior.
* Fixed bug causing CPU running at 99-100% while launching the application.
* Fixed bug preventing events when equipping Gale Fibula.
* Fixed bug causing you to get stuck when releasing Ankh while using Lamp of Time.
* Fixed bug making it impossible to fight certain Room Guardians again after warping during battle.
* Add some sound and graphic effects.
* Reconsidered preventable attacks and non-preventable attacks with the Shield.
* Fixed/adjusted platform in certain Room Guardian/Guardian’s fields.
* Replaced all illustrations in the Glossary.
* Fixed, adjusted and added text.
* Fixed other small bugs.

Changelog for Patch 1.5.5.1 (added 25 February 2019):

Bug Fixes
* Fixed bug sometimes preventing the player from leaving the area after fighting the guardian "Hel".
* Accelerated various processes.
* Adjusted various types of game balance.
* Enhanced rendering where it was lacking.
* Added, edited, and adjusted text.
* Various other small bug fixes, etc.

Changelog for Patch 1.6.6.1 (added 09 May 2019):

* Fixed some collision issues.
* Fixed bug missing an Ankh Jewel by updating from 1.4.4.x to 1.5.5.x.
* Fixed other small bugs.

Changelog for Patch 1.6.6.1 Hotfix (added 16 May 2019):

- fixed a game stopping bug

Changelog for Patch 1.7.7.1 (added 17 July 2019):

- Fixed and adjusted text.
- Fixed bug making it impossible to get certain entries for the Glossary.
- Adjusted some events.
- Fixed other small bugs.

Can anyone verify what version the game's up to now on GOG?

Version is still 1.7.7.1 here on gog not sure if steam was updated further or not. *checked and the steam version is updated while gog is a year out of date*