On June 7th, 2021 Apple announced the upcoming release of iPadOS 15. At this time this software is in "BETA" (testing phase) - this status indicates the OS is not ready for public release or support.
IS&T does not support iPadOS 15 while in BETA. This article will be periodically updated as Apple announced a release date / supported devices.
Please note that IS&T does support iPadOS 13 and iPadOS 14 for things like calendars, email, contacts.
For information about iOS 14, please see KB article iOS 14 at MIT.