The band have confirmed plans to release 10 new tracks over the next five months as part of their Conventional Weapons series via their official website.
The songs were recorded in 2009 during the sessions for their fourth studio album, which they then ditched to record their latest record Danger Days: The True Lives Of The Fabulous Killjoys.
'Boy Division' will be the first track to receive a 7" vinyl digital release on October 30, along with B-side 'Tomorrow's Money'.
"Beginning in October we will be releasing two songs a month for five months," Frank Iero explained. "10 songs in total from the Conventional Weapons sessions we did back in 2009.
"We hope you enjoy these time capsules, and that they may shed a little more light on how and where Danger Days came from."
He added: "And maybe even where the future of MCR might be heading. It was the best of times, it was the worst of times... and now it is finally time to lift the veil on Conventional Weapons."
The full tracklisting for the Conventional Weapons releases is as follows:
Title: Number One
A-side: 'Boy Division'
B-side: 'Tomorrow's Money'
Release date: October 30, 2012
Title: Number Two
Release date: November 23, 2012
Title: Number Three
A-side: 'The World Is Ugly'
B-side: 'The Light Behind Your Eyes'
Release date: December 18, 2012
Title: Number Four
A-side: 'Kiss The Ring'
B-side: 'Make Room!!!!'
Release date: January 8, 2013
Title: Number Five
A-side: 'Surrender The Night'
B-side: 'Burn Bright'
Release date: February 5, 2013
Watch the music video for My Chemical Romance's 'SING' below: