iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2018-05-29T17:15:24Z. The update package is 250.21 MB. This is a delta (partial) update that requires 11.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 57f161bcb82d4dbd960ee23eb7d98ce790d38156.zip.