According to the leaked news, xiaomi going to released two smartphone in the new year 2019. where Xiaomi Mi 9 and Mi Mix 4. Where the mi 9 had already a news 2months ago.
It also said to be that Mi 9 could have feature like 5G network, Triple Rear Camera (48 MP Sony IMX586 sensor+13MP+16MP) , under display fingerprint display, also Snapdragon 8150 chipset, though it's yet confirm that it will not featured snapdragon 8150 chipset. other configuration accuracy can be say from the time being.
GF securities of HongKong, China express that both of the smartphone will have the same configuration of triple Rear camera, so this is gonna be first two smartphone of xiaomi with triple rear camera.
Both also will be powered by Snapdragon 855 chipset, where Mi Mix 4 may have featured foldable display, though it will not be new thing. but the possibility score is 40/60%.
