We have reported before on efforts to get the SE Xperia Panels interface on the HTC Touch HD. Earlier attempts were far from perfect, and left you stuck in the Panels interface and unable to switch to another, due to the lack of a Panels button.
It seems with some clever hackery this problem has been solved,and the Panels are now fully functional on the HTC Touch HD. For proof the team has made this Youtube video available.
The interface is now in private beta, and they hope to have the cab released to everyone interested very soon.
Keep an eye on this thread for the latest developments.