The way they incorporate hooks into their heavier/metal compositions is very nu metally.I've been quite a big fan of this band for some years. I'd never say they have nu metal elements - what you're hearing is djent, I'd say. Maybe some progressive metalcore elements, too. They're possibly the only "modern" metal band I can say I really like. They can be heavy (obvious Meshuggah influence) but in my view they excel at their most atmospheric and melodic, with a very polished, layered production that seems to be made for surround sound. Every single member of the band is technically outstanding, yet their music never feels "showy". My copy is on the way. I can't wait! I only listened to the 11 min title track (still impressed by the videoclip) but that was more than enough for me to preorder it.
We can have a 400 page thread splitting hairs over genre definitions. They play djent but I wouldn't call them djent anymore than, say, Haken (who have been incorrectly lumped into that bucket by some). If we're looking for one genre that fits them best, simply calling them Prog Metal would be closest. There's like 75 different metal genres now, some are very different some are indistinguishable.
Gojira would be a good example of a djent metal band. Gojira and Tesseract are very different.