Who said that e-paper was old stuff?  Certainly not China -- the country's Guangzhou OED Technologies has created what it says is the world's first graphene-based e-paper.  The extremely strong yet light material promises very thin screens that are both brighter and more flexible.  You could get e-readers that are easier to read on a sunny day, for instance, or activity trackers that can put up with more abuse.  It should even be less expensive, as graphene's carbon is much easier to find than the exotic indium metal you see in conventional e-paper.