After finally making the big jump to FroYo just a few months back, it seems the Epic 4G might have another imminent update. The popular Sprint Samsung Galaxy S device might be getting the major Gingerbread update soon. This speculation comes from an xda developer member, who after reading the codes, found that the device is now listed as a Gingerbread powered phone. This means Samsung has a little surprise waiting for you guys, and once they are out of devices to release for other carriers, I am sure this update will be pushed out ASAP.
Source: Epic 4G user agent string suggests Gingerbread is on the way? -- Engadget