The E3 coverage page of Bungie.org has a new set of screenshots from Wednesday's FanFestV, as well as mention of three movies they've got of actual Halo gameplay. The third isn't yet available as it is rather large (60MB).
Also spotted at Halo.bungie.org: Reports on FanFestV from TeamXBox, another from Bungie Sightings, and yet another from MSXbox. Apparently for every three Xbox gaming sites now you get eggroll.
Last but not least, TeamXbox also has an article titled Halo Dissected , with detailed reports from their staffers who actually got their sweaty palms on an Xbox controller and wrestled to master the awesome power of the Halo marine. This was also spotted by Harry at Halo.Bungie.org.