The middle one is the POCO X3 NFC with a 64MP quad-camera and the last one is the unknown POCO device with 48MP dual cameras. The rear camera setup is identical on both the devices, however, the number of cameras is different. The front side image might indicate that both the POCO device has a punch-hole display.
We expect to hear more details soon about this unknown POCO device. The company is launching two smartphones in the first week of September. The first one is POCO X3 NFC launching later today, and the second one is POCO M2 scheduled to unveil on September 8.

A POCO smartphone with 48MP main camera coming soon - 10