Today marks the publication of the last in the set of overview level White Papers that David Chappell was commissioned to write on .NET Framework 3.0 technologies. We've all put a lot of effort into ensuring that these papers answer a software architects question "What is W*F?"
David Chappell on WCF
The .NET Framework 3.0 overview whitepaper has also been translated in several languages:
Update just saw this correction from Jesus Lopez. The Brazilian site is in Portugese, not Spanish. Sorry about that.