And yes, Mormacil beat me to it. It is apparently the mother of the Underfrykte, http://www.imperial-library.info/obbook ... rnal.shtml that's some more information and lore on it.
Though it might look good already, I am sure that if the Underfrykte catches your attention I want to wait doing that quest..

As well as maybe the items gained by defeating the Matron of monsters.. If you are going to touch those things, I'll wait patiently till you release it.

And yes, playing without WaC? I can't anymore, actually I am peeking at other parts of Tamriel mods and wondering if I will like them, just because they don't have WAC there. I am like "Okey, I enter lets say.. Skyrim, and I do not encounter unique creatures there.." But also the great amount of conflicts. I wish for a total tamriel which is both lore based and is like. Totally tamriel instead of all different projects. x.x But then again, Tamriel is a big island, even for the Oblivion Size..
EDIT: At the preview: Nice armours, really, will there be an option where you can select which opponent you will fight when you are a grand champion? That would be so great, that would actually be a reward to fight for, instead of the vanilla 'you can fight beasts after you are grand champion'.
And I encountered some Snow Fears at night. Jikes those beasts are freaky at night, with their lit up eyes..
Ah, plus a picturesque one from a satisfied Vigdis:
