I think some missed this post.... I agree that this is probably going to be the method for HD output.
It will most likely have what the GS2 and some of the HTC phones have.
It's a tech called Mobile High Definition Link
Mobile High-definition Link - Wikipedia, the free encyclopedia
You have to buy an adapter like this:
HTC Mobile High-Definition Link Adapter | HTC 73H00394-00M | Data Cables
One end plugs into the phones microUSB port and the other you put a full size HDMI cord into.