The Chinese house Xiaomi would be working on a new low-end device, the redmi 4, which in these hours are coming new information and also of the first photos.
This new product, which will rank probably in the mid to low range of smartphones, with a metal body appears similar to that seen on redmi 3 and should be characterized by:]
2.5D curved display
Octa Core processor clocked at 2GHz (Mediatek Helio P10?)
16 GB of internal memory
2GB of RAM
8 MIUI based on Android 6.0 Marshmallow
As you can see from the pictures also, the speakers will be placed at the bottom of the smartphone which should also boast a rear fingerprint sensor as well as a photographic optical single.