Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - General Merry blah blah and to all a good launch , EXCEPT.

To be fair, we don't know for sure why the GoG version is being delayed. I know they mentioned GoG Galaxy in the KS update, but that doesn't mean support for it is necessarily the cause of the delay. We'll have to wait for someone from Larian or GoG to confirm the source of the problem.