Does Divinity 2:Dragon Knight Saga have a lead platform, or was it developed simultaneously for both PC and Xbox 360?

It was developed simultaneously for PC and Xbox. The game itself is the same on both platforms (other than the PC version supporting higher resolutions, etc) but there are differences in the camera system, UI and controls. Larian's previous games are PC only.

Thanks for the info. Looks like I'll be buying the 360 version.

Me too. I've pre-ordered the North American Xbox release (The early dragon gets the art!).