Rome: Total War - Alexander expansion

Rome: Total War is getting an expansion where you can play as ALexander The Great. From totalwar.com:

Alexander features a brand new campaign game in which players take on the role of the great military leader, Alexander the Great. The campaign plays out on a brand new campaign map and challenges you to replicate Alexander’s incredible feats by unifying Greece and conquering the mighty Persian Empire. The pack also includes six new historical battles, highlighting Alexander’s most significant clashes, a brand new multiplayer mode, and narration throughout by none other than Brian Blessed. Altogether there are 4 new factions, over 60 new units and more than 30 hours of gameplay.

The expansion pack will be avalible for download in a month from sega.com.