Adding my experience. In 2014 I totalled my 2012. When I bought my '14, it was after the factory started converting over to the '15 model. Selection was small for fully optioned cars, so I went nation wide looking at the inventory at different dealers. The cars came in 3 flavors. 50 State Legal, California Emissions, and Federal. The Emissions type is listed on the Window Sticker.
Below is a capture from my 2012 showing it was a Cali car and the 2nd image is my 2014 (which is 50 State). I have no clue what is the difference between 50-state and Cali emissions. The '14 car I really wanted to by was in Dallas, but was not 50-state or Cali emissions so I would not be able to register it in Oregon until it was a 'used' car - which by Oregon rules is $5k miles on the odometer. Attachment 489802 Attachment 489810