Bill and Theodora file their 2011 federal tax return on September 6, 2012 after receiving an automatic extension to file their return by October 15, 2012. When does their statute of limitations end for their 2011 tax return?

Assuming April 15th is the original due date, if Greg Jones needs to file for an extension until he gets more information to complete his return, what is his new filing deadline?

When in his payment deadline?