You can tell by the amount of posts that I am really excited about this. Make sure if you are interested in the Beta, whichwill release on August 30th, that you register yourself at http://connect.microsoft.com.
A cool Blog site on game developer stuff that also talks about XNA is at http://letskilldave.com/Default.aspx. Check it out.
N.B. I'm still in the process of figuring out how to upload the PodCasts I made at Gamefest. Stay tune.