HTC HD2 is one such phone which can run windows phone 7, Android Gingerbread, Meego, Ubuntu and the latest OS to add to the list is Android Jellybean.
The users of HTC HD2 can always have their faith in this phone and thanks to the XDA-Developers who are working hard to release the latest OS on market to this smartphone.
A Pre-Alpha version of Android 4.1 has been released for the HTC HD2. And still a lot of work is going on to release the stable version of Android 4.1 for this phone.
If you are interested in porting the latest Android OS to your phone, check the LINK at XDA-Developers forum.
Update: Currently Alpha 2 version has been released.