Xiaomi is on a spree, as they have launched Redmi Pro and Redmi Max along with Mi Notebook Air. Xiaomi is not resting after launching those few devices. They are preparing for some even big devices.
As per the source, Xiaomi is developing Mi Curved Devices. As per them, Xiaomi is developing curved devices are Redmi 4 variants.
We can see a metal unibody smartphone with a fingerprint reader on the back and a lot of design similarity to the Redmi line all throughout. The device comprises specs of Helio X20 chipset, memory should include 2GB for RAM and 32GB for storage.