Microsoft Press has recently released "Introducing Windows 7 for Developers". Samples are presented in C++ and C# managed code. See the table of contents below.
1 Welcome to Windows 7 2 Integrate with the Windows 7 Taskbar: Basic Features 3 Integrate with the Windows 7 Taskbar: Advanced Features 4 Organize My Data: Libraries in Windows 7 5 Touch Me Now: An Introduction to Multitouch Programming 6 Touch Me Now: Advanced Multitouch Programming 7 Building Multitouch Applications in Managed Code 8 Using Windows 7 Touch with Silverlight 9 Introduction to the Sensor and Location Platform 10 Tell Me Where I Am: Location-Aware Applications 11 Develop with the Windows Ribbon, Part 1 12 Develop with the Windows Ribbon, Part 2 13 Rediscover the Fundamentals: It’s All About Performance
There are several other Windows 7 books published by Microsoft Press. They are available at Amazon.com and other online and local stores.