IPadOS 15

iPadOS 15 is the next major update to iPadOS that is reportedly in development to succeed iPadOS 14. It is expected to be announced at the 2021 Worldwide Developers Conference in June and released sometime later in 2021.

Supported devices
Apple is reported to be limiting compatibility to devices using the Apple A10 "Fusion" processor or later, eliminating support for the following models:
 * iPad (5th generation)
 * iPad Air 2
 * iPad mini 4