Yeah, so the reflective LCD technology isn't quite dead. I guess when both reflectivity and quick refresh rates are required, monochrome LCD is still the only solution, since Liquavista and Mirasol were discontinued. For color displays there is simply no solution at all with decent reflectivity I believe. The E Ink Gallery 3 display seems to mostly solve the low reflectivity problem, since it does not rely on standard additive sub-pixel color mixing. But there is no similar solution for higher refresh rates. There were improved Mirasol prototypes which apparently solved the issue, but shortly after they were shown, the development of the Mirasol technology was discontinued.