OK, I too, talked to a Sprint rep... and Employee Accounts Rep at that, and she said August...
A friend of mine, who is on T-mobile, desperately wants the EPIC. He has a Vibrant and loves it. He took his Vibrant, into a Sprint Store, to ask about the EPIC. The Manager of the store told him that if he sold him the Vibrant for cheap, that he would get a nice discount on his sprint bill and that the Epic was due out, sometime within the last 2 weeks of August, which basically lines up with the August 20th, prediction of many on here.
I sent my EVO back, and AM starving for a GOOD phone. The pre,(as noted earlier in this thread and another thread) is soooo much crap, compared to even my Sprint TP2 with Android running on it... The only CONS I can take from the Pre is that it has a nice teeny tiny small screen, and that it has a nice above average (basically the best one I have seen so far) E-mail client that does multiple MS Exchange Accounts, contacts, and calendars, etc. in a nice integrated way.
I was desperate enough to start looking around for a HD2 to slap android on... that is how desperate I was.... seriously...
Right now, my mind is made up... I am headed to the Corp Store down the street from my office, and will buy an Intercept, for myself, and will switch it over to my wife's account and get an EPIC...when it comes out.