IRX Innovations was established by ex-Philips employees (that developed Philips' E Ink technologies) to develop EPD products. The company is now developing a technology they call Electro Osmosis which is similar to E Ink (electrophoresis) but the big difference is that the liquid that contains the charged particles also move inside the pixels in Electro Osmosis (in electrophoresis only the charged particles are moving). This enables much faster refresh rates.
The company is currently developing a prototype black and white display, but they are aiming towards color. They expect the displays to have similar properties as E Ink, but with better contrast and much better color gamut.
If you want to learn more, check up the company's presentation from SID 2013.