Excellent! I remember when MiraSol first appeared here, it was very exciting, and still is. A
very promising approach, in my opinion. I'm glad to see they're to the stage of an actual product.
For general consideration: I believe the first commercial e-ink application was a flash-drive that had a "fullness" meter on the side, so you could see how much space you had left on it. It preceded full-on e-ink reading devices by ... less than a year, I'm thinking, but the memory is fuzzy, so ....
No reason that this one would follow the same path, but I still find it encouraging.