It was announced a while ago but Feral Interactive is modifying 'Empire: Total War' for the Macintosh. The game is set to be released this Spring, so I'm assuming anywhere from late march to mid May. Can't wait! Beast! This game got a 94/100 on IGN, and is the Gold edition on Macintosh, so you get all the extra cool stuff.
Have you played it before though? Apart from being able to play it on a different system, I'm so big on the hype. Mainly because you could already partition a Mac and use one half to play Windows games on it.