Tomorrow is the day! Civilization: Beyond Earth launches on Mac on November 26! More info is available over on the Aspyr GameAgent blog here: http://blog.gameagent.com/civilization-beyond-earth-mac-linux-dev-update-5/
If you pre-ordered the Mac version through GameAgent, you'll receive an email tonight with your Steam key. And remember: Beyond Earth supports Steamplay, so if you already purchased the PC version then you'll automatically have access to the Mac version tomorrow and, when it launches, the Linux version. Enjoy!