People will say that talk is cheap, but just the admission that he needs to lose weight is already a huge departure from his previous mentality. As recently as last summer, he was quoted as saying, "Not really focused on weight. More shape".
We'll see if he has the resolve to actually make a change, but it seems like this is the first time he's at least made it a goal.
Edit: Actually, I take it all back. I thought he mentioned weight during his sideline interview with Abby Chin during the game, but I read the article and he doesn't mention it at all. He's still just talking about "conditioning" and "shape". Sounds like there's still a bit of denial there.