Jawad Khaki, Microsoft Corporate VP of the Networking and Devices Technology Division, discussed Longhorn's networking features in an interesting discussion posted in the "Executive Chat" session of the Microsoft TechNet portal.  Among the various new enhancements being added for both enterprise and consumer networking, the most notable ones include support for IPv6, a new WiFi stack (being re-written to allow for extensibility and support for 802.11n), and peer-to-peer (P2P) features.  It is an interesting interview and good reading material.