It's just a simple case—either a smooth silicone skin or a thin snap-on hard shell—that reveals nothing new about the phone and is nowhere near as interesting as an early glimpse of the final version of the kickstand-equipped case we saw at CTIA would be, but hey, it's something.
I don't know how far in advance stores usually get accessories for an unreleased phone, but it's probably only a few weeks . . . bringing us right back to that early June release. I've even heard some whispers of a late May launch, but June seems much more likely to me.
Either way, every day that passes brings us one day closer to the EVO 3D's release.
[Android Central] Thanks, jaydeeIL!