I spent the better of of a day looking into some useful articles for those interested in XNA.
March 7, 2005: Interview: From Redmond With Love? Microsoft's Chris Satchell On XNA Studio
This article talks about hopes of XNA after it was announced but before any betas were released.
Knowledge Level: I'd recommend you have a medium experience level with programming before trying to digest this entire article.
April 4, 2005: XNA Studio Interview [with Chris Satchell]
This article talks about XNA Studio, presumably the commercial version, and touches quite a bit on how XNA Studio will help game creation with teams.
Knowledge Level: This article is suitable for beginners but would make an easier read if you're familiar with Visual Studio.
October 21, 2005: J Allard Gets Real: Microsoft's VP closets the sales shtick and gets dirty. Read our revealing, detailed, and in-depth interview with the man behind the 360.
This article is a great read if you're tired of reading technical stuff about XNA. This year-old article talks some about the general vision J Allard has for the Xbox 360.
August 13, 2006: Gamespot: Microsoft unveils 'anybody' XNA
Knowledge Level: Anyone.
August 14, 2006: Will Xbox 360 XNA succeed where Sony failed?
This article mentions how Sony released a game creation kit for $750 that performed poorly for several reasons. I find this article to be quite sobering.
Knowledge Level: Anyone.
GarageGames Interviews
August 15, 2006: Microsoft Gamefest 2006: GarageGames Interview
This is an interview with GarageGames executives about their product that allows for 2D development with the XNA framework for Xbox 360. There are two parts of the article that I can really connect with: The first is when Joshua Williams talks about how there is a cool factor to showing off an Xbox 360 game you created to your friends, and the second is when Mark Frohnmayer talks about the potential for profit:
Knowledge Level: This article is suitable for beginners.
August 15, 2006: GarageGames Interview
This is another interview with Josh Williams. I love this quote:
Josh Williams: I'll be shocked if we don't. Counter-Strike and Darwinia are great examples of small teams doing homebrew projects that hit it big. XNA Game Studio Express is just going to inspire more aspiring game developers to go for it and try to turn their ideas into reality. XNA makes it easier on game developers of all kinds, and beginners especially, to get their games up and running. The Torque X engine gives people a further leg up, offering them access to professional caliber technology on top of the XNA Framework and easy to use game development tools."
Knowledge Level: This article is suitable for beginners but a small portion will be more understandable if you have a basic knowledge of how 3D games work from a technical standpoint.
Blogs devoted to XNA
Knowledge Level: Depends on post. Some appropriate for beginners. Good thing to read over even if you don't understand it all.
Knowledge Level: Moderately to Advanced Programming Experience.