Ordered 4/29, June delivery, in Utah.
From what I've seen on /r/AppleWatch, it seems we might be up to, and including, the 26th. Hopefully, I'll be getting an update on mine in the next few days.
4/26 here in NJ. My shipping estimate has not moved off of June. I put this order in see if it would arrive faster than my 42mm Space Gray I placed on launch day. I hope that's the case.