Is there any difference in the seats. Or are they the same.

Color.

 

some who have had both report that the 2010+ is more comfortable and speculate a different foam but the key word is speculate.  All years are interchangeable. 

I couldn't take the stock seat for more than 50 miles. I was in the dealer and they had a new 2010 on the floor, I sat on it and it felt different to me, I bought one from a member here and it was better than the 09 IMHO.