...and a Day 1 patch:

We went "gold" a couple of weeks ago. This is the phase of development where we send the game off for manufacture. In the meantime, and in fact right up until release, we'll be working on the day one update, which will be deployed on Steam when you activate the game.
http://forums.totalwar.com/showthrea...l=1#post110846

Ahh...the inevitability of it all.