No, the HTC HD2 will evidently never die. First released in November 2009 with Windows Mobile 6.5, the device has been successfully hacked with every OS including Windows Phone 7, 7.5 and 7.8 in addition to Android.
The news comes by way of their official forums and is currently lacking details on how it was accomplished. Only a handful of photos showing what looks to be an earlier build of Windows Phone 8 running on the HD2 is given as evidence. The poster though is 'Cotulla', whose reputation is very well known in the hacker-mod community, meaning we can safely assume this isn’t a hoax.
Still, until we have more details on the project we'll have to go with a 7 on our rum'o'meter.
The project, if successful, is remarkable if only because Windows Phone 8 features some extensive software-hardware security “handshaking” in the form of Bitlocker. That form of security is reportedly tied to a physical chip on the device, something that the HD2 is missing. How such a system is bypassed, as mentioned above, is currently not known.
Hopefully more details will be coming out soon with an actual release because as you have probably figured out, if the HD2 can run Windows Phone 8, there might be a chance for Windows Phone 7 devices too.
Source: DFT; Thanks, talan1314, for the tip!