It definitely looks like he's lost some weight. I'm not sure I like the idea of him slimming down too much though... his combination of size/speed/power was one thing that made him unique. He might get a bit faster, sure. but maybe at the expense of doing awesome poo like this less frequently?
Maybe it's just me, but on a more positive note something seems a bit different about him, I know it's just a single interview, but he seems to have grown up a little more over the offseason... seems to present himself in a more mature way or something. Our QB left for college a boy and has now returned a man.