According to this Spin report, Green Day will be releasing their upcoming full length, 21st Century Breakdown on May 15th – a Friday – rather than May 20, 2009 as originally announced.

The band is also planning to debut the first single from the record, “Know Your Enemy,” in mid-April through digital retailers and radio. Spin describes the song as “like an outtake from the Dookie sessions.”

The record is their first since 2004’s American Idiot.
Source According to this Spin report, Green Day will be releasing their upcoming full length, 21st Century Breakdown on May 15th – a Friday – rather than May 20, 2009 as originally announced.

The band is also planning to debut the first single from the record, “Know Your Enemy,” in mid-April through digital retailers and radio. Spin describes the song as “like an outtake from the Dookie sessions.”

The record is their first since 2004’s American Idiot.
Source