So I was watching some live videos of Trivium from last year's Mayhem Fest and All Hope Is Gone Tour...

Pull Harder: http://www.youtube.com/watch?v=2aQUtZaK5WY
line "Tyrant I'll burn you down"

When All Light Dies: http://www.youtube.com/watch?v=eV1Twj2QMZI
line "Why won't the blood loss kill me"

No denying they sound awesome. I haven't noticed Matt doing these while headlining, only some growls.
But can these be expected from the next album? They sound so kickass.