Papyros, A Material Design, Opensource OS for your computer
The official site says "We are building some exciting features including atomic upgrades, powerful notifications support, and much more. We're leveraging the latest and greatest Linux technologies, including OSTree, Wayland, Qt 5, and much more.". From all that i can heard of it so far it is sure to be a heck of an os when it releases.
Intrested in learning more on Papyros then visit their official website papyros.io.
Want to stay on track with its developments then just follow their G+ community here.
Image shown here are taken from their official site and their G+ community.