You can find the Windows 7 Launch Event Site here.

Windows 7 For Developers Sessions:

• Developer Event Registration & Continental Breakfast
• Taking Your Application to the Next Level with Windows 7
• Beyond Human Interaction with Windows 7 Sensor and Location Platform

Windows Server 2008 R2 for Developers Sessions

• Windows Server 2008 R2, What’s New and What’s Changed
• Windows Server 2008 R2, Build Solutions that Scale Beyond 64 Processors
• Windows Server 2008 R2, Enterprise Network Solutions