CoDe Magazine have they're September/October issue online and free to view featuring several articles on XNA.

Direct links to the articles are below:

• Microsoft XNA: Ready for Prime Time? by Nickolas Landry
• Introducing XNA Game Studio Express by George W. Clingerman
• MVP Corner: Perspectives from a .NET Guy at GDC by Nickolas Landry
• Heard on .NET Rocks!: Frank Savage on Programming the Xbox 360 by Carl Franklin

Thanks to Michael Klucher of the XNA team who posted these links on the XNA team blog.