Will Halo reach have offline AI?

I've been looking for this everywhere, and I can't seem to find a straight answer. I can't play XBL (Xbox Live) and so after the campaign ends, multiplayer gets dull quickly. I know they plan to have a game mode called firefight where you can fight AI offline, but will they put it in forge? Basically what's the reality, is it going to be there, or not. Or does nobody know?