I would like very much, if this is true, to be Chaos Dwarfs.
I doubt it would be, because it doesn't sound like the fluff for CD would fit with this HUGE different concept thingy hinted at, but I can dream, can't I?
I don't know whether I'd be mad or excited if it wasn't Chaos Dwarfs. On the one hand, I'd be furious because they send a letter saying "We just need time to make them again from scratch, and they'll be back". Then, when they get that time, they spend it on a NEW army instead?! The CD player inside me would feel irrevocably betrayed.
On the other, a radically different army, with an awesome and unique look and feel, could be so exciting and refreshing that I, as a lover of WFB in general, could forgive one of my favorite armies being passed over in favor of the newcomer. I guess only seeing this new army (if it is indeed true) will tell.