The song is "Hammerfall," and is being offered for free at www.offspring.com. You just type in your email and your country and you'll receive a link for a one time download of the track as a 320kbps DRM free MP3.
The song comes from the album, "Rise and Fall, Rage and Grace," which is set to hit stores on June 17th. According to Billboard, aside from the CD and digital release, they also plan to offer "a gatefold vinyl edition of 'Rise and Fall, Rage and Grace' will come bundled with a free digital download of the album."
Tracklisting: 1. Half-Truism 2. Trust In You 3. You're Gonna Go Far, Kid 4. Hammerhead 5. A Lot Like Me 6. Takes Me Nowhere 7. Kristy, Are You Doing Okay? 8. Nothingtown 9. Stuff Is Messed Up 10. Fix You 11. Let's Hear It For Rock Bottom 12. Rise And Fall