Ubisoft has announced the release of two new downloadable maps for the Xbox version of Splinter Cell: Chaos Theory. And downloadable they are; playable, however, they are apparently not.
According to a lot of posts on the game's official (and very dark and green) forum, you can see them and download them, but it's impossible to actually access them in-game. Ubisoft is reportedly looking into this.
For the record, the two new maps bring the co-op campaign to an end, as players pursue nasty-men through a Nuclear Plant level and then UN Headquarters. We'll let you know as and when you can actually get your thumbs on them.
When you do, you'll be able to engage in split-screen, System Link and Xbox Live play - and they're supported by both Mission and Elite Modes. Apparently.