While we expect the Mi MIX 3 on October 15, Xiaomi might launch two devices on the said date. Aside from the Mi MIX 3, the Mi Note 4 is expected to launch alongside it.
This does not come to a surprise, as the Mi Note 3 was launched alongside the Mi MIX 2 last year. There are no details about the Mi Note 4, but expect it to have at least a Snapdragon 710 processor.
The Mi MIX 3, on the other hand, is expected to have a Snapdragon 845 processor and at least 6GB RAM.