Hi @chairman
I understand your skepticism, given what you currently see on the market. It is a frustrating fact that it takes many years before emerging technology is actual available to consumers. Liquavista (recently purchased by Samsung) developed electrowetting technology in 2003, yet we are still waiting on their first generation of e-reader screens.
There are many working prototypes. I can't publish my entire source list, but here's a few links to demonstrate what I'm on about.
BBC Article & Video LIQUAVISTA 2010
MIRASOL IMOD display 2012
AEROBEE E-paper Video 2011