I thought they were not going to ship until the Jun. 1ST
Edit: I just checked the order status and sure enough my Innocase shipped as well. This is great news as this means I'll have the case on June 4th. The folks at Seidio really did an amazing job getting these Evo cases out promptly.
I just got a shipping confirmation as well. I purchased an extended battery along with the case, I suspect the battery is the item that shipped.
But maybe they are shipping some early?