Watch the trailer for the new 'Downton Abbey' season August 15, 2012 | 11:59 am | Modified: August 15, 2012 at 12:00 pm Leave a comment Everyone wants to get back to "Downton Abbey." Watch the trailer for the third season here. "Downton" begins air on PBS in the U.S. in January 2013. 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.