This is a prototype of a deck that will be manufactured by Cartamundi. They were present at Cardistry Con 2015 to showcase it, but they said to not "get too attached to it" as the design is going to change. They want to create a deck designed specifically for cardists. For example, one that could, right-out-of-the-box, fan well, and that the packets hold well together. Right now, you need to break-in your decks for some time to achieve that state. They are considering every aspect of the card: stock, finish, corner radius, etc. They have decided to keep standard poker size though.
More details in Cardistry Con 2015 Livestream.