Posting here as I am not seeing a more specific thread, and I guess this is one of the places where we discussed Kaleido the most.
It seems a new Kaleido is forthcoming, due for 2021.
Quote:
Companies are able to use a layer of glass, as well as non-glass based displays. The refresh rate on color will be as fast as B&W e-paper. There will be improved color and contrast performance and reduced graininess
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From:
https://goodereader.com/blog/electro...-color-e-paper