Sony has managed to keep the schedule it promised at the end of November, and an update delivering Android 11 to the Xperia 10 II has started rolling out. The "super mid-range" phone was announced in February 2020 and released in certain markets beginning in May, running Android 10.
There's no changelog associated with the rollout that we can spot. However, Sony usually sticks pretty close to stock, so Xperia 10 II owners can likely enjoy most of the features Android 11 has to offer on other devices — though there are definite highlights to look forward to, like the new media controls, conversation notifications, bubbles, a built-in screen recorder, power menu smart home controls, and more.
The update is on the lighter side, at just under a gigabyte in size, according to reports. Nonetheless, you'll probably want to pull it down on Wi-Fi to avoid burning through too much data.