The higher ups at Sprint are supposedly throwing around June 13th (and June 6th) as the date that the world’s first WiMAX smartphone, the HTC Evo 4G, will become available. Meanwhile, hearsay on Android Forums indicate that Verizon’s HTC Incredible is scheduled for launch on April 25th and will be stocked by Best Buy, while Android and Me is reporting April 29th.

Engadget’s Evo 4G buzz has more meat to it since Sprint has already declared that the phone was planned for early summer.

“Montana Man” at Android Forums has roused a ruckus, purporting to have a reliable source who tells him that Best Buy will have the HTC Incredible on April 25th. Follow the posts and determine for yourself if you believe him.

Android and Me says April 29th is the Incredible day.