The Winter 2015 Update for Civilization: Beyond Earth is now live! Your game should automatically update itself through Steam - if you are encountering issues, try restarting your Steam client. You'll know you have the new version if you see version number 1.0.2.658 below the main menu.
Full list of changes in this update can be read here: http://www.civilization.com/en/news/2015-02-information-on-the-civilization-beyond-earth-winter-2015-update/