Obviously not a lot is known about the faction but take a look at these pictures which I'm sure after seeing them you will agree that it is more than we would have gotten in 6 months of 'picture of the day'.
Definitely the coolest town/castle of all.
I'm very happy about the introduction of a new original faction and couldn't care less that the other traditional towns aren't in the vanilla release because we don't simply need a reskin of heroes every few years. We need changes and new ideas.
That is not to say I don't want the other factions back in the expansions, just that the changes are so good and dramatic I can live without them.
This faction is my favourite.