So there's an edit on the main page that links to the gamepedia Slay the Spire wiki. It does seem to be the Official Wiki, as it is also linked from the developer's site (megacrit.com).
The options seem to be:
1. we stop updating the wikia version and port some content to gamepedia
2. we ignore the gamepedia version and keep updating wikia
3. we update both versions
4. we update none of the versions and go mountain climbing
Any thoughts on this? I kind-of prefer 1, bitterly...