Some interesting snippets on Unreal Tournament 3. Although the article reflects on the Xbox 360 version, I am sure it's relevant to all versions of the game. http://news.teamxbox.com/xbox/13875/UT3-to-Feature-Between-36-and-48-Multiplayer-Maps/
Personally it sounds like a huge game, but when they said that the singleplayer will have more 'maps' than the multiplayer, it implies that it would be you versus bots.
Personally it sounds like a huge game, but when they said that the singleplayer will have more 'maps' than the multiplayer, it implies that it would be you versus bots.