When I was at the Adelanto GP last month, I was talking with a Honda friend and he gave me a quick update. He said that Tim has been in a facility in northern California for a couple of months. He has been in a very aggressive rehabilitation (PT, OT, etc.) program. He has to relearn everything including how to communicate. He is making progress and this news is very good to hear.
The gang @ Baja Designs said much of the same about two weeks ago, said he is doing much better. They said his family gives them updates about every other month.