I'm always really annoyed by questions like this. You took the time to sign up to a forum but you couldn't be bothered to check Nissan's website? It just shows a lack of initiative and makes it seem like you want information spoon fed to you.
5 second search on 2010/2011 differences:
difference between a '10 370z Nismo and 11 370z nismo?
2009 370z vs 2010 370z vs 2011 370z
2010 vs 2011
Just do a search next time on simple questions like this. Google is your friend. If it's a technical issue we're happy to help.