From Vista Beta 1 Fact Sheet
<extract>
“Avalon” and “Indigo”
Windows Vista beta 1 also includes the first beta of Windows Presentation Foundation (formerly known by the code name “Avalon”) and Windows Communication Foundation (formerly known by the code name “Indigo”), which are part of the WinFX™ programming model. WinFX extends the Microsoft .NET Framework with classes for building new user interface experiences and advanced Web services. Together, they enable developers to build connected systems that take advantage of the processing power of the smart client, incorporate cutting-edge media and graphics, and communicate with other applications with improved security and reliability.
</extract>
More details for WCF can be found at, http://msdn.microsoft.com/windowsvista/connected/
and for WCP at http://msdn.microsoft.com/windowsvista/experience/
– Paul