Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - General So where is that Linux version anyway?

Yes, there was a Linux version planned for D:OS. See the first post in this topic.
That's different than the EE being announced with Linux and SteamOS support.

"Larian's idiocy"? You're the one complaining you will not be able to immediately play the EE. I would think the possibility you may be able to play it would not also invoke complaints.