Just found this out on WinMo.nl website and thought it was worthy of a share. What you see here is a HTC HD2 running one of the early builds of Windows Phone 7 Series. According to the site, the build was working nice and smooth and it was shown running on HD2 to the audience in Barcelona present at MWC.

A Chinese site by the name of QQ (QQ.com – English translated version) claims to have got hold of the specifications for the successor to HTC HD2. According to them, HTC HD3 will launch in November 2010 (exactly one year after HD2) and will be powered by Windows Mobile 7. Moreover, it will feature Qualcomm’s 1.5Ghz Snapdragon processor, a 4.5’’ HD display, HDMI port, support for 4G, WiFi and WIMAX, 8 megapixel camera with support for 720p HD recording, 16GB internal memory and 32GB external via microSD card.

The Windows Mobile enthusiast site named WMPoweruser has learned that HTC Obsession, which we reported about earlier is set to launch later this year on AT&T and T-Mobile US as HTC Diamond3. Their report confirms that the smartphone is scheduled to ship sometime in June this year, however this date is likely to slip to Q3/Q4 launch in 2010.

Soon after the news which confirmed the official upgrade path of Windows Mobile 7 for HTC HD2, folks over at XDA have dug deep and found out some references made to Windows Mobile 7 in the latest HTC Sense 2.5 Build 1922. This version of HTC Sense is from the leaked version of T-Mobile US 2.01 ROM for HTC HD2.