According to a tipster, this is a closer look at the AMP Powersuit from James Cameron's motion capture film Avatar. This concept art, supposedly by James Clyne, is set to be included in a brochure promoting an Avatar tie-in game for Ubisoft. And it'll appear in Titan's upcoming book on The Art Of Avatar. That's assuming it's real concept art, of course. It hasn't been confirmed by Fox, so take it with a grain of salt.
Actual concept art or not, it's still pretty cool.