The change is to the type and location of the mat retainers. 2009-11 were the black clips that the floor mats just slid into. 2013 onwards were the turn clips that lock the mat into place. The 2013+ clips are in a different location than then 09-11. That's the only change. I replaced my 2010 carpet with the 2013-15, and everything but those clips (and the shade of tan) were identical.
So other than the clip/securing locations, the mats will fit perfectly.
Good info here and thanks for clarifying!