HTC EVO 4G already running Gingerbread1
Although this ROM is not stable, the guys at XDA-Developers are working hard to optimize it, so anticipate another news article soon saying that the HTC EVO 4G is running a bug-free version of Gingerbread. Chances are that it will be released before an official update take place. For more information on the newest Android update, see our article about the Nexus S and Gingerbread.
source: XDA-Developers via BriefMobile