A dual-screen laptop with an e-ink screen on it's cover
InkCase
An e-ink screen for the back of your iPhone
Lenovo Yoga Duet 7i
Anew laptop with a detachable keyboard & e-color pen
ZenBook Pro Duo
A new laptop from Asus with two 4k displays
DUO by Mobile Pixels
A second screen for your laptop
Surface Neo
A dual-screen device built for productivity
Lenovo ThinkBook Plus Gen 2