E-Ink showed off its new "Spectra" display film at SID. This is different than Triton because they have actually added a third color- Red for now- To the black and white mix they had already
Edit: Interesting graphic deleted becasue of size:
http://www.eink.com/images/spectra_how_it_works.gif
This is the result of course of E-Ink absorbing SiPix last year. It even mentions a microcup design. How ever this already looks clearer to me than SiPix ESL material and they say it can be segmented or active matrix. That i'd like to see in person as SiPix never made that happen. SiPix never got 3 colors in one cup to my knowledge. They could only do fields of black and white or white and color.
Nate has an article
http://www.the-digital-reader.com/20.../#.UZzKDcrXSUc
his video