Our buddy Dave "LetsKillDave" Weller has done a post this morning on the XNA Team Blog announcing a beta for Community Games on LIVE.

Now we’re pleased to offer you an opportunity to interact with this new site and test out the distribution pipeline to Xbox LIVE!  If you’re a already a premium member, you will be able to join us in the Community Games on Xbox LIVE Beta immediately, where you can submit your games and review others games, and enjoy playing them on Xbox LIVE! If you are not a member, sign up today and get involved in making game development history.

Also from the post:

    • The Quick Start Guide will take you on a tour of all the features of the new site plus a guided tour of how the community games distribution pipeline works.
    • The new Education Content Catalog lets you find content quickly by type or development area
    • The new Role Playing Game Starter Kit – sure to stimulate your need for creating your own “old school” RPG-style game
    • The new Community Spotlight area, featuring interviews and articles from amazing community contributors (and sometimes a “celebrity interview”)