A new player pack - i.e. new content - titled Black Edition is available for the Xbox 360 version of Rainbow Six: Vegas through Xbox Live.
Following on from the release of Red Edition in April, Black Edition includes five multiplayer maps. Three of the maps are brand new, one is a "reduxed version of Streets" according to Major Nelson on his blog, and lastly there's a remake of the Presidio map from the original Rainbow Six game.
Downloading Black Edition will cost you 800 Microsoft Points, which is six pounds and 80 pence in real money.