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.