tvOS 11.0 (build 15J381) is an official Apple over-the-air update for the Apple TV 4 (2015), released on 2017-09-13T00:37:23Z. The update package is 680.61 MB. This is a delta (partial) update that requires 10.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f14b45c57590261bbbb8580d68e8d1d5d451a36d.zip.