A quick peek at an internal page at Sprint lets us know that the Epic 4G apparently will be seeing some of that sweet Gingerbread goodness, as build ED12 is being tested. It's an .rdf file, so the formatting in your browser leaves a bit to be desired (see for yourself via the source link) but the words "OSName GoogleAndroid" and "OSVersion Android 2.3" are right there in black and white.
It's been speculated that Samsung would have a much easier time developing Gingerbread than they did with Froyo, and we have already heard that the international version of the Galaxy S should be seeing Gingerbread sometime soon. And that's a good thing -- a lot of the behind-the-scenes changes take much better advantage of Samsung's Hummingbird chip and the performance difference should be pretty major. Of course there's no word or even an estimate of when to expect this, but in the meantime we can all wait and speculate in the forums. [Sprint]