Take this with a BIG grain of salt, but it seems details of the HTC Desire HD have leaked onto the interwebs. The phone, which may have previously gone by the codename "HTC Ace," comes packing 4.3-inch WVGA screen, along with a 1GHz Snapdragon and 8MP camera that can take 720p video. In addition, it would come with 4GB on onboard memory and Android 2.2 ("Froyo"). No confirmation on what type of screen it would have, but safe money would say a SLCD as HTC appears to have learned its lesson with AMOLED on the Incredible.
Of particular interest is the "UniBody Aluminium Design," which means the phone could be a mashup of the HTC Desire and the HTC Legend. Again, this is all rumor and speculation from something that looks very linkbait-ish, but we will keep our eyes peeled for more information as the supposed October launch date nears.
Note: The picture is a HTC Desire, no pictures were leaked of the Desire HD [SuperETrader via Engadget]