Yeah, it's great news! The guys from Arsis are amazing guitarists, I can't believe they used to use those horrific Madison amps (awful tone sucking noise).
It's great that they use the MTS series, this is the best series of amp to come out in the last decade. Until now there has never been an amp that can instantly give you a reason not to by Fender, Vox, Marshall, Mesa.
I've played so many Mesa's & Marshall's, if I want anything like their tone, the MTS series has it, and if I don't the right module is readily available!
Go MTS Series !!