Is it December 12th yet?!?! If you're anything like us, you can't WAIT until Taylor Swift's tour documentary, The End of an Era, finally drops next month on Disney+. But you're in luck! Good Morning America released the first full-length trailer for the new six-part look inside the epic world tour on Thursday! In the trailer, Taylor opens up about how she originated the idea for the concert about two years before taking the stage.