While the video initially shows the HTC HD2 running the NoDo update on the smartphone, towards the end (sometime after 2:45) of it there’s a short glimpse of what sources call as an early developer build of the Mango update. Microsoft could possibly release the firmware upgrade later this year and it might be called Windows Phone 7.1 or 7.5.
The firmware update will include more features like Internet Explorer 9 (complete with hardware acceleration and partial HTML5 standards support) and support for enterprise functionality and more languages. Plus other features which haven’t been announced like background downloading, third party multitasking and additional audio enhancements.
What seems to be more interesting is that after Nokia and Microsoft teaming up, we definitely want to see how it affects Nokia handsets.