for what it is worth, and it is not much at all. I went to two different sprint stores yesterday to get my hero worked on and both mentioned the supersonic and said they were guessing June or July for a release date?
I have had a lot of recent problems with my hero not working well as a phone, and was considering switching to a moment, the first guy told me to wait. He said I would be better off waiting as he was confident the supersonic was coming out, just not 100% able to tell me which month.
He knows as much as we do which is nothing im sure, but it was some sort of hint maybe.