it looks like he gained good mass, he's not ripped like say kongo, but but no means is he looking sloppy. on the count down he said he gained mass, but not like a bodybuilder because that would slow him down. i hope he wasn't kidding.
i think with his improved striking and adding lean muscle makes frank more of a threat. he's definately looking at brock and re-gaining the belt. (he'll need gsp level tdd to do that)