Color e-ink probably isn't going to be at quality-parity with e.g. LCD displays anytime especially soon. Kaleido is still really cool, especially when it's used properly, but it's probably going to be a bit too weird for something really like reMarkable for a little while yet.

Sometimes there's Indiegogo hype for "ooh, a large color e-ink tablet!" and I'd encourage cautious pessimism about those listings. Might be a good idea to wait for them to ship, and to wait for some reviews.