The turbo charger is still compatible and works the same with the 2014 Moto X it just doesn't come with the X out of the box. You just have to buy it separately. I like having the standard charger that came with it and the turbo charger for when I need it.
There's a member with my sentiments. I will definitely be using a standard (i.e. slow), charger for every night charging and keep the Turbo charger for those emergency situations (if I even need it based on the battery size.)