iPadOS 11.4 (build 15F5071a) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2018-05-07T17:11:24Z. The update package is 257.76 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: 8bc1d1f1b560153f1a282f11e684e3a093f87a4f.zip.