Windows Vista Developer Center

I am doing an interview this week for an article on Windows Vista and what is available for developers.

I think I will refer the journo to the Windows Vista Developer Center, specifically the reference section

Application Compatibility
Find easy ways for your existing applications to work on the new platform and achieve the "Works with Windows Vista" designation.
Communications
Find reference information to help you build communication functionality into your Windows Vista applications.
Interoperability and Migration
Get information on interoperability and migration for your Windows Vista applications.
Mobile PC
Get information to help you develop mobile PC applications for Windows Vista.
Presentation
Find resources to help you build applications that reflect the high fidelity experiences in Windows Vista.
Security
Understand the impact that the security changes in Windows Vista may have on existing solutions and the opportunities that exist to build a new generation of secure solutions for Windows
System Services
Get reference information on system services for Windows Vista.

Additional resources