Earlier today, Xiaomi has revealed their upcoming Android Q beta testing schedule for a handful of their smartphones as seen below.
According to the schedule a total of 11 smartphones including Xiaomi Mi 9, Xiaomi Mi 9 SE, Redmi Note 7. Redmi Note 7 Pro, Redmi K20, Redmi K20 Pro, Xiaomi Mi 8, Xiaomi Mi 8 Explorer Edition, Xiaomi Mi 8 Screen Fingerprint Edition, Xiaomi Mi Mix 2S, as well as Xiaomi Mi Mix 3 are expected to commence their beta testing in the forth-quarter of 2019. After which, the official update could be released within the same quarter or during the first-quarter of 2020.
On the other hand, the Redmi Note 7 and Redmi Note 7 Pro duo will only begin their beta testing during the first-quarter of 2020. Of course, the list here is non-exhaustive as the Chinese smartphone maker may still be bringing other Xiaomi/ Redmi smartphones into the list.
One thing to note is that the list above applies only to the Chinese variants.