I'd also like to add that the game cost $100 million to make. If Microsoft gave them $50 million, that's another half the game right there. Now, take into account that they don't need to spend money buying new music (probably only a little bit), they'll likely add maybe one or two tv channels, a few San Andreas-style web sites, and obviously some new buildings.
They already have the engine done, they probably know exactly what they're going to do by this point (probably started working on it already). With those assets already done, they could EASILY make a new city in a few months that is of a decent size.







