Our friends at Freeverse released a content pack (available 6/18/08) coming to the Xbox Live Arcade port of Marathon: Durandal.
Earlier today,
Freeverse announced that their "Jjaro Map Pack," a content pack that includes 12 classic multiplayer maps from Bungie's Marathon and Marathon: Infinity. In addition to the 12 maps, is the Jjaro collection "a texture and design set previously introduced in Marathon Infinity." There will also be a couple of new achievements to, uh, achieve.
Some Bungie.net users are getting together for some Marathon action. If you're
interested in participating, head to the forums.