Freedom Planet 2 was released today on Steam. I wonder why it's not on GOG, hope it's a sync issue and will be released soon :(

They talked about it in the steam forum. Something about GoG being more complicated and that the game has to be with certain stability before launch. The game is good. But if you noticed it has had many patches since release. Maybe they will bring it to GoG once they're sure most of the bugs are fixed.

If you merely want a DRM free version of the game, it's on ich.io
(Does steam even have real DRM for Freedom Planet 1 and 2? I know some games don't actually force you to log in or launch from steam).