from: http://www.engadget.com/2011/09/03/sense-3-5-comes-to-the-htc-desire-hd-unofficially/:

After seeing the screenshots and video presentation of Direction 3.5 , you feel like you’re missing out? We. Well, the lucky guy in possession of HTC Desire HD do not have to wait another minute, provided they are comfortable custom ROM flash. People are more cunning XDA-Developers forum have made ​​a software version of the next flight of Bliss and carried him over the Desire HD. As expected, there are some bugs with this ROM based 2.3.4 – Bluetooth does not work at all, would have – but that seems like a small price to pay for living on the edge of the skins Android. Hit the source link or fire up ROM Manager to download now. After all, why should some anonymous woman with silver nails have all the fun?