he sixth season of 30 Rock, an American television comedy series on the NBC network in the United States, began airing on January 12, 2012. 30 Rock was renewed for a sixth season by NBC on November 15, 2010. The season began airing mid-season to accommodate Tina Fey's pregnancy. On November 14, 2011, NBC announced that 30 Rock would return at the new time of 8:00 pm.
This season was initially expected to be Alec Baldwin's last, as he had announced he would be looking to expand into other forms of media. However, in January 2012, Baldwin confirmed that he would remain for the seventh and final season of 30 Rock.Overview from themoviedb.org