The 802.11n adapter whose development Microsoft recently confirmed will cost you one benjamin. The existing 802.11g adapter will get a haircut and cost $79.99. That's according to Ars Technica's trusty, and unnamed, "Mole."
The new adapter, and its ability to stream 1080p video, is tied to Microsoft's upcoming Zune video store update to Xbox Live later this year. Ars got no word on a specific release date for either, however.
Mole Spills Holiday 360 Bundle as Microsoft Begins $50 Rebate [Ars Technica]