Roma Surrectum might fit the bill, it has new factions like Syracuse, Pergamon, and the Bosporan Kingdom:
It has new features like the non-playable Free People faction for greater challenge, population control buildings, and new units skinned by tone, including the Greek unique city hoplites:
And a new map:
The release thread is here:
http://www.twcenter.net/forums/showthread.php?t=137604