iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2018-03-29T17:11:07Z. The update package is 600.94 MB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bf327391a0815f8c77017fc2430480a628228be9.zip.