http://www.popularmechanics.com/technology/digital/gaming/sneak-peak-of-halo-reach
"Spectating aside, without having played the mission, it's hard to confirm whether the extra effort paid off. Jarrard claims that everyone on the team knew it wasn't a necessary feature, and that it was a gamble. "But in our play tests, it's always one of the highest-rated parts of the game," he says. There are other surprises in Reach, including multiplayer modes that weren't playable in the recent public Beta, more new vehicles and a fully-featured level-editor that's so powerful, Bungie developers used it to create a few of the maps that will come with the game. Although it's already in preproduction on its next, non-Halo game, Bungie wants Reach to have the biggest dramatic punch of the entire series, and then to live online for years. If Reach is as good, and as bold, as it looks, the final days of Halo could last a very long time."
Sounds like Forge 2.0 where you can edit the level and not just objects within a level. If true, Bungie is packing this damn game with an incredible amount of content.
