Despite being overshadowed by Samsung in the past few months, HTC has put up quite a show at the Mobile World Congress this year. It has unveiled its Android tablet – the HTC Flyer, as well as Android smartphones like the Incredible S, Desire S and the Wildfire S. It also unveiled two Facebook phones – the HTC ChaCha and the Salsa.

However, if the latest rumor by Engadget is true, it would probably be the most interesting, and definitely the most unexpected development at MWC 2011.

Apparently, HTC is working on a new Android smartphone which will be headed to AT&T in Q3 2011. It will be powered by Android 3.0 Honeycomb which is supposed to be the tablet version of Android. If true, the HTC Revolver will be the first phone to run Honeycomb, which will be coming on all major Android tablets later this year.

The hardware specs of the HTC Revolver are also quite impressive. It has a 1.2 GHz dual core processor, 1 GB RAM and will come with a 4.3 inch LCD capacitive touchscreen display. It will have 16 GB internal storage capacity and will sport an 8 MP camera, as well as a 3 MP secondary camera. It will be available exclusively on AT&T.

Word of caution: The rumor seems too good to be true, and probably is.

Update: This rumor is a fake