Can any of the big e-reader companies just please release an A4 sized color e-reader? It can clearly be done, why are we still stuck with black and white for the 13 inch ranges?
I don't have one, but it's closer to what you mention.
Currently, the cost of the panel alone would be nearly $1000. Yields on Kaleido-family screens aren't great (and are supposedly even worse for Gallery, the high-quality color panels) and they get even worse for larger panel sizes.