As XDA member dealer75 leaked the ROM of the currently unreleased HTC Desire HD, we can expect that the new enhancements in the Sense interface of this phone will be ported to other devices very soon. This Froyo (FRF91) ROM contains a lot of new features that make Sense much better. Some highlights:
These are just few of the many enhancements. The Desire HD also boots up much faster (about 5 times quicker), but this is most likely hardware related. It could be possible that the OS has had some dramatic changes to make the booting procedure a lot shorter though.
All these changes will likely be ported to many other Android phones soon, including the HTC HD2 with Android. We will keep you updated when the first ports are available.
Some forums you should definitely check out for future development are the Desire, EVO and Droid Incredible. To find the download for the system dump of the Ace, continue to the original thread and the second thread which is located in the new Desire HD forum.