France-based LDLC's Nemeio is a smart keyboard in which each key is a small E Ink display. All the keys are customizable with the bundled application, and the keyboard can change according to the running application or website.

LDLC Nemeio photo

LDLC's plan is to ship the Nemeio in the "summer of 2019" for $300-$500.

E Ink display info: 
81 E Ink displays
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