The new Bungie.net site seems to have (at the moment, at least) three major areas.

The first is Seventh Column, described as the Official Bungie Fan Club and Underground Army. There are already five clubs listed in their directory, including one called Rampant (although the site reports they have been disbanded. Hmm).

The second is called Truth and Reconciliation which is described as a Halo community site.

There isn't much of anything there at the moment except for an interestingly-shaped, Marathonesque three dimensional image and the words watch this space.

The last is a Myth site called The Myth Vault, which includes stats, leader boards, and information about orders and accounts.