iPadOS 11.4 (build 15F5077a) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2018-05-14T17:17:05Z. The update package is 257.96 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 17c101dfdf2bef0faff87bb25bae2ed8c113ddd9.zip.