So very complicated...
Anyway, just to dilute the tech discussion, I would like to say that I expected this announce or something similar.
Last year, around the same time viziplex was announced that allowed eInk readers to make a new generation model. I though, that if something like that doesn't happen, how will they justify a new model (which is faster, better, whiter, sweeter, ...etc., you get the general idea?).
Here we go, a new controller, means we get new generation readers soon and will spend more money for a whiter/faster/better brand new eInk screen with a super duper new controller.
They know very well what they are doing