Just going to state that for those worrying about this getting the "AllowCrossRegionTradingAndGifting No" flag. Don't. As far as I can tell, the flag does nothing. As an example, Castlevania 2 has that flag set, yet I was able to get it gifted from the UK without problem, despite the game being restricted here (reason for restriction = Japanese publisher).
So the likelihood is, that even if it were to get that flag and there are indeed regionally censored versions of the game cross region gifting is still going to work. As for whether there are regional variants, I have no idea. Valve pulled it from the store here as soon is got a price. Ubisoft when asked why it was removed have said they don't know, and that they are "looking into it" (which usually means, we don't know, but tough luck).