D810 Firmware here.

The only change to the update from v1.10 to this new v1.11 is:

• Fixed an issue that sometimes caused the camera to stop responding when attached to a WR‑R10 wireless remote controller running firmware version 3.00.
ie. while v1.10 was a major update, this one is a minor update only to resolve a bug that occurs when attached to that wireless transmitter device.