Some owners of Nexus 10 Android tablet began to receive OTA (over the air) update to Android 5.1.1 version of Lollipop. Users report that this is a small apdektu size 13,9MB. Updating slowly comes to devices, so that at the moment they do not see all users Nexus 10 tablet.
It is expected that with this comes Updates more than the usual stability and performance improvements, and bug fixes. This update marks the Nexus 10 tablet as one of the first Nexus devices get Android 5.1.1 Lollipop. Google recently enabled Android 5.1.1 Lollipop factory settings for the Nexus 7 2012 and 2013 as well as the Nexus 10 tablet.
Source: Android Authority