The Devil Wears Prada is an American Christian metalcore band from Dayton, Ohio, formed in 2005. It consists of members Mike Hranica (vocals, additional guitar), Jeremy DePoyster (rhythm guitar, vocals), Kyle Sipress (lead guitar, backing vocals), and Andy Trick (bass). The band had maintained its original lineup until keyboardist James Baney left the band. To date, the group has released six full-length albums: Dear Love:

In an interview at the beginning of April with Lucy Alberts of Alternative Press, the band revealed that they were recording an EP before they begin their Back to the Roots Tour. The EP was described as a "fun" release with "brutal" songs in the vein of what will eventually become the band's forthcoming studio album. The band's Back to the Roots Tour was presented by Rockstar. Mike Hranica stated "One of the primary elements of the Back to the Roots Tour is playing a few Dear Love songs that we have not played in a long time, and probably will not play again or anytime soon." On June 11 it was announced that they have completed the recording of the EP, the title for it was revealed as being Zombie and was released on August 23. After the completion and announcement of the EP, the band began their Back to the Roots Tour on June 25 as they planned.  By January 2011, Hranica revealed in an interview with Tim Karan what the band's ideas and plans for their fourth full-length studio album would be. His comments were placed within comparison to their latest release (the Zombie EP and described that the record is "a more heavy-focused sound from us. We think it would be smart to push that beefy, heavy songwriting [from Zombie] into the new full-length...but with a strong blend of what we usually do with melody." The album was confirmed to not be a concept album - like their previous work on the Zombie EP - but would have an overall theme, focused on anti-idolatry, which, according to Hranica, "has been weighing on me lately." On June 13, Alternative Press began streaming a track, titled "Born to Lose", debuting off the upcoming album, and during the same month, the band signed with Roadrunner Records. Vocalist, Hrancia offered his opinion of the new material, stating that it will contain "the heavy aspects of the Zombie EP, meshed with the melody of the full-lengths. 'Born to Lose' captures some of those elements and serves as a comprehensive preview to the album." He ended his comments with; "By all means I'd call it our most emotional, well-written album to date."  The album's name was revealed to be Dead Throne, and was released on September 13, 2011 through Ferret Music. It has since become a critical and commercial success, where it peaked at number 10 on the Billboard 200, selling 32,420 copies within its first week. Dead Throne also topped the Christian and Independent album charts, as well as peaking at number 3 on the Rock and Hard Rock album charts.  The band was confirmed for the Mayhem Festival tour at the beginning of 2012, with Slayer, Slipknot and As I Lay Dying. During this tour on February 22, 2012 keyboard player James Baney left the band. The Devil Wears Prada will release a CD/DVD album, Dead and Alive. The live album was released on June 26, 2012.

Using a quote from the above article, answer the following question: When was Dead Throne released?
September 13, 2011 through Ferret Music.