Sprint Targeting Aug. 20th for Epic 4G?

First, AT&T's Captivate was released on July 18th. The Samsung product video showed up on the next business day, July 19th. The T-Mobile Vibrant's video appeared on July 21st, which would appear to be late, as the device shipped on July 15th, but if you remember it was originally set to release on July 21st, it makes sense.
Looking at Samsung's video schedule, it now says the Epic 4G's video is set for August 20th.

If the theory holds up, that's the date for the launch of the Sprint Epic 4G. A more vague clue also comes in the form of a tweet from Samsung, in which they said the Epic 4G was coming in a "few weeks."
With the exception of the slide-out keyboard and a front-facing camera, the Epic 4G is pretty much a clone of the other Galaxy S devices coming to U.S. carriers. It has a 4" Super AMOLED screen, 1 GHz Hummingbird CPU, a 5 MP camera, 802.11n wi-fi, a 1500 mAH battery and a 6-axis accelerometer, in addition to the keyboard and F-F camera. It's unclear if we will see Android 2.1 or 2.2 at launch.