iPadOS 13.0 (build 17A5572a) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, Cellular, 1TB Model), released on 2019-08-21T17:05:10Z. The update package is 120 MB. This is a delta (partial) update that requires 13.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 89f4c2f75e2dbb1669e49ba36c150ccc6ae65daa.zip.