In recent
updates the company announced that mass production has started this month (June) and that they plan to ship every order within next month (July).
Yesterday they released a video showing off the color display of the 6" device:
->
https://www.kickstarter.com/projects.../posts/3542609
It looks similar to E-Inks Kaleido displays, maybe slightly better colors. (Though that is hard to tell without a direct comparison.) Response time seems allright.