Last week while I was on vacation they published my latest whitepaper on MSDN. It covers the various new features found in WCF 4.0. The following abstract will give you a better of idea of the main areas I cover in this 60+ page paper:
A Developer’s Introduction to Windows Communication Foundation (WCF) .NET 4 Beta 1
The .NET Framework 4 comes with some compelling new features and welcomed improvements in the area of Windows Communication Foundation (WCF). These WCF enhancements focus primarily on simplifying the developer experience, enabling more communication scenarios, and providing rich integration with Windows Workflow Foundation (WF) by making “workflow services” a first-class citizen moving forward. The .NET Framework 4 will be released with Visual Studio 2010, which is currently in “Beta 1” – you can download the Beta 1 release from the Visual Studio Developer Center on MSDN.
The good news is most of the WCF changes in .NET 4 focus on making today’s common scenarios easier and making new communication scenarios and development styles possible. As a result, moving your existing WCF solutions to .NET 4 will be fairly seamless in terms of migration. Then you simply decide which new WCF features you want to take advantage of in your solutions moving forward. The rest of this paper introduces you to each of the new WCF feature areas in .Net 4 and demonstrates how they work.
You can grab it here. Enjoy!