iPadOS 12.1.3 (build 16D5032a) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, WiFi, 1TB Model), released on 2018-12-19T18:06:48Z. The update package is 317.21 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 498057762c5058be33a53284db985aea9777f0a4.zip.