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.

He's done them every time I've seen them during the shogun tour cycle. ;o

He's had that vocal since Ascendancy at least, on Suffocating Sight

Panic grips your frantic breathing
I can't breathe, I can't breathe,i cant breathe!

You can here it, it's just gotten better over the years. When I saw them they played Iron Maiden and he did that where he did the high note on the record, amazing!