I know you all want ice cream, but you'll just have to wait. Everyone on a Epic 4G has what appears to be a test build (better than nothing!) of the Android 2.2 Froyo OS build available to them today on an official tip from Google themselves. Have a peekie at it if you do so dare. [ZIP file]
Instructions on what to do with this sweet junk are available via the excellent pack of magicians over at XDA.