I try not to say a "time" I expect it, but I'm guessing the end of May or early June.
My reasoning is that the Rezound was April to May "window" and the T-Mo Sensation is Mid-June. Makes me think the Evo3D will be in-between those two.
Who knows? Not me. I wish Sprint would tell us something. I am getting very minisculely slightly frustrated. Just give us a Quarter at least. Something, say something Sprint! lol