According to the FCC documents, Zune Flash player comes in two versions 4GB and 8GB, with Hynix Memory and Toshiba LCD and has a TV out system. It syncs and charges normally using a USB cable with the PC and has a Marvell 88W8686 Wifi chipset!...
You can read the documents for yourself here, here and the parts details here . More information about the Marvell 88W8686 chip.
Another interesting feature (available to FCC only?) is that they could control via Software the strength of the Wireless signal (802.11 b/g).
P.S. They coll guys on FCC tested the Car charger / FM transmitter listening to Ice Cube 
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Zune Flash Player on FCC site