Microsoft is about to release a new version (Windows Mobile 5 AKU 2) with most any profile that is missing in the current version including A2DP and many other.
http://www.theunwired.net/./?itemid=2779
So all we have to do now is to urge Dell to release this in a new ROM pack as soon as it is available.
I own several i.Tech A2DP enabled devices and I'm also looking forward to this release. In the meantime I use the i.Tech BlueCON 35 - does give you A2DP - but not AVRCP as it is only a transfer of sound from stereo minijack and to the headset.
http://www.itechdynamic.com/newweb/product.asp
Regards Michael Williams