This was Devin's answer to one of the questions on that whole thing where fans submit questions via twitter and facebook:
"I’ve been in Chicago working out with Tim Grover, putting on more weight and not trying to repeat the season personally I had or the team. I’ve worked a lot on my body, adding about 15-20 pounds."
This is the best news of the off season by far. I am in the fitness industry and Grover, as you may already know, is the absolute best of the best. Those who work with him come back the next season as better players, and most important, they remain on the court.