New trailer for 'Downton Abbey' season three September 6, 2012 | 9:37 am Leave a comment A new trailer for the upcoming third season of "Downton Abbey" hit the internet on Thursday. It gave fans an inside look at what is in store on the UK hit. The new season will premiere in the U.S. on Jan. 6, 2013 on PBS. Sign Up for the Daily E-dition newsletter! Please enter your email address below to begin receiving the Daily E-dition newsletter. You must enter a valid email address in the field above! Thank you for signing up for the Daily E-dition newsletter! You should receive your first newsletter very soon. We're sorry, there was an error processing your newsletter signup. Please click here to visit our Newsletter Signup Center to register for this newsletter.