Samsung announced the Galaxy Note Edge a few months back, and it seems that Xiaomi is now working on a device to compete against the Galaxy Note Edge. A poster seemingly reveals a device called the Xiaomi Arch.
The Xiaomi Arch will not only having one curved edge, but two. However, keep it in mind that this would seem to be nothing more than a concept. If the Xiaomi Arch is real, most probably it will come at lower price against the premium priced Galaxy Note Edge.
Well, just take it as a pinch of salt, because the Xiaomi Arch is likely just a concept instead of real product.