The sedan gets the most of the reworking. Front and rear are obviously new.
Making the compact sedan look a bit more upscale, and closer to the new Accord.
Not sure it is that much better, but it's different.
On the other hand, the coupe seems pretty much the same outside. It looked better than the sedan in the 1st place, so why not.
It also has much less competition in the market place. There isn't many compact coupes available anymore these days, except this and the Elantra Coupe.
The interior seems much better than before. You can tell the shape of the dashboard is the same, but the parts are mostly new. (The 2012 bellow)
And what a difference. They finally got rid of the 80's brown/beige combo for a more upscale black/dan choice.
And the whole thing looks 100 times nicer.