When you search on ePaper, you will find some really outdated websites. Look for example at http://www.epaper.org.uk/. It seems that some people had than jumped on their board to surf an ePaper wave that lasted too long to arrive.
I'm conscious that this market might take years before really taking off, but I'm confident it will eventually fly.
Yesterday, Apple released the iPad but I'm confident that ePaper will provide solutions with much lower energy consumption which will allow a competitive advantage. ePaper should provide a more stable and cheaper technology for long term consultation of eContent.
But it might take time : I'm ready to spend many years doing this on the side even if I'd prefer to have ePaper as primary activity :