Here is a little info.
LM got the contract. But
This link is a little outdated, but a good bit of the info is good.
http://www.fas.org/man/dod-101/sys/ac/jsf.htm
This link has better info as it is strait from the Contractors web page.
http://www.lockheedmartin.com/factsheets/product20.html
Good luck!