alt Hacker NewsLast time I read about them (here in HN) somebody highlighted that the problem wasn’t to get them to function at a high refresh rate, the problem is they stop being energy effecient at that rate. Now I mostly skimmed the article but I couldn’t find any information regarding that.
I think that's true, but energy efficiency is only one potential benefit of epaper displays, and not one that is a goal with this product.