iPadOS 10.3.3 (build 14G5057a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2017-06-28T16:53:00Z. The update package is 51.01 MB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 84c9a9f169eaf0051d793a2f90be21ab932550ce.zip.