There is an upcoming online chat with Jawad Khaki regarding Longhorn Networking features on March 22 at 11:30. Want to be first to know what is changing (and there are years worth of work here) in the networking stack? This is the place to be. Or maybe that you have a favorite issues regarding the tcp/ip stack, winsock, firewall, UPNP, wireless, NDIS, home networking, Peer-to-Peer, IPV6? Here's your chance to tell the man in charge.
You can go read more about Jawad in his executive bio. Also, he is going to have many of his General Managers come to the talk including, Christian Hutima (of "Routing on the Internet" and IPV6 fame) and Henry Sanders (Transports General manager where the web transports and the TCP/IP stack live).
Update: The transcript of the event is up on Channel 9 thanks to ZippyV