The Samsung Epic 4G is one of the more compelling incarnations of the Samsung Galaxy S.  With a slide out QWERTY keypad and WiMAX, the device promises to be a hot seller for Sprint.

So when can we get our hands on the Epic 4G?  The Android Police have a few data points that suggest the device will be on sale by August 20th.  They base this timeframe on the release date of a Samsung TV video featuring the Epic 4G.  Previously, Samsung TV videos for mobile phones have come between one and four days after the device was released.  The Samsung TV video for the Epic 4G is scheduled to be released on August 20th, so if the timing of this video is anything like previous Samsung TV videos, then the Epic 4G should be released before August 20th.

Sure, the Android Police’s theory isn’t solid proof, but the August 20th timeframe does jive with Samsung’s announcement that the Epic 4G will be available by “mid-summer.”  We’ll keep you up to date as we learn more.