I just received this response from cdwow support
This mail is in reference to your query.
We have confirmed from our buyer that the below game is a UK PAL version.
http://www.cdwow.us/games/divinity-2-the-dragon-knight-saga-xbox-360/dp/19003895
If there is anything else we can do for you please don't hesitate to get back to us.So my hopes that they somehow have an NTSC xbox 360 version are
hereby smashed 
