pcgamehunter: Ye I noticed this as well couple hours after the update went live on Friday. I contacted GOG customer service, they game me classic (verify this, install dx9) and then went quiet. I plan to contact Shiravune if they don't respond today.
Workaround:
The unrated patch on GOG is the same or near-identical to the patch release for the steam/censored version.
You can download the patch from:
https://patch.moe/
Then drop the files on top of the gog base game install.
There is a naming clash in the versioning between Shiravune and GOG, so the GOG 1.0.2 version is considered 1.0.1 by the game, so the 1.0.1 patch.moe patch works with GOG 1.0.2 install.
If anyone encounters any issues using it, let others know. I only tested the introduction.
Have just checked in the GOG client and the game seems to have been reverted to version 1.0.1 now, haven't tested yet but hopefully it's all good. Thanks for the help though!