Is this iTunes for Windows Mobile?
This appears to be a brief overview of iTunes running on Windows Mobile 5.0. Instead of the iPod-like interface that the ROKR uses, this looks more like iTunes itself. The author of the article notes that it was possible to play 1 GB of MP3/AAC files that were stored on a SD Card with this mobile version of iTunes.
Also, searching for a specified podcast feed over GPRS was successful. Looks good. If only this was how the ROKR worked.
First a Windows powered Treo, and now this. It's mass hysteria!
Thanks to Jake and Zach!
Update: Here are some additional pictures.