Sum 41 have posted the first song from their upcoming album. he record is titled Underclass Hero and is due out July 24, 2007. The album is the first from the band without founding guitarist Dave Baksh who left in May.

The band will be supporting the album on a variety of festival dates as well as some Warped Tour stops. The band released Chuck in 2004.

You can check out "March of the Dogs" on their myspace page.