I wouldn't be surprised if Thor's new outfit matches the Marvel NOW! redesign, but I don't have an eye for those things and don't know without directly comparing. Come to think of it, I think the Iron Man suit that has been confounding people may match the Marvel NOW! Iron Man as well.
Looks like Prince Charming is out as Fandral and my boy Chuck Bartowski might be in!
http://spinoff.comicbookresources.com/2012/06/09/thor-2-targets-chuck-star-zachary-levi-to-play-fandral/
That's long enough from now that it probably doesn't matter, but I wish the production would dictate the release date and not the other way around. IM2 probably could have stood a little more time in the oven, though i liked it.