Mango demoed on the HTC HD2 (video)

Backlashsid have published this video demonstrating beta 1 of Mango running on the HTC HD2.  While many people are eager to get their hands on the update, the build that is floating around at the moment is far from complete, lacking Marketplace access and being otherwise locked, meaning apps can not even be side loaded, has a variety of bugs and even a HTML5 browser.

In short, while a ROM is out there it is advisable to wait a bit longer for a more polished product.

Read more in this XDA-Dev thread here.