Might be of interest to some of you guys...
New Networking Features in Windows Server "Longhorn" and Windows Vista (Microsoft article published 15/2/06)
The New Windows Firewall in Windows Vista and Windows Server "Longhorn" (The Cable Guy article published 1/1/06)
40-minute WMV interview with the guys behind the Vista/Longhorn networking components (MSDN Channel 9 published 24/11/05)
All about IPv6, the new TCP stack, Windows Firewall, IPSec, etc.