As discussed here, and if you have an XBOX 360, download it now and write some cool games.
The XNA team has also updated their blog with a very interesting post about how XNA Game Studio will help developers manage content, esp in the game development world, where content comes in many different forms such as 3D models, media, artwork etc and managing thousands of files and different formats is a big challenge for game developers today. Most would rather focus their time and attention writing the game itself and not having to build the infrastructure. Read up more about how XNA Game Studio is going to help developers do just that.
Again, read more about XNA Game Studio at the team blog here: http://blogs.msdn.com/xna