Xiaomi released the Mi A2 right about two years ago. The phone was launched with Android Oreo but has received two major OS updates: Pie and Android 10. Owners of the phone may be hopeful on their chances for Android 11, but the chances of that happening look to be non-existent.
When quizzed on the subject, a moderator on the Mi Forums clarified that the Mi A2 will, in fact, not receive the Android 11 update. That should come as no surprise to owners of the phone. After all, the Mi A1 got just two updates: Oreo and Pie. It stands to reason that the Mi A2 gets the same number of OS updates.
Two major updates is industry standard these days, with only Google and OnePlus currently promising three, after the demise of Essential. The official Android One page also promises just two years of major OS updates.
Since the Mi A2 will receive two major updates, logic dictates that the Mi A2 Lite will be the same. So no, the Mi A2 and Mi A2 Lite have both received their two promised major OS updates, and will not be getting Android 11.
Source(s)
Mi Forums via PiunikaWeb