Last I know is that he'll be back on John Lucas' Camp two weeks from now for all of August. Other than that I haven't seen anything new from him since a week or two ago, so nothing to report on that regard.
But I think it'll be meaningless regardless. He seemed to be making some progress last year and didn't hit his goals, so even if we might like to see how he's going, I think the only thing weight worthy, no pun intended, is how he shows up for the Celtics training camp.