NBC has announced the sixteenth season of The Biggest Loser will premiere with a two-hour episode on Thursday, September 11 at 8PM ET/PT.

Thursday nights will mark a new time period for the reality weight-loss competition. The last season of The Biggest Loser aired in one-hour episodes on Tuesday nights.

The network has yet to reveal who will serve as The Biggest Loser's sixteenth-season trainers, however, Jillian Michaels reportedly wants to quit the show for a third time.

In early April, People reported Michaels, 40, wants to leave the show after Rachel Frederickson, 24, was crowned last season's winner.

"She is deeply concerned about the direction the show has been taking," a source told the magazine, referencing how Frederickson had dropped down to a shocking 105 pounds for The Biggest Loser's fifteenth-season finale.

NBC announced it had renewed The Biggest Loser for an additional season last month.