Nikon has released firmware updates for the : D4, D4S, Df, D800, D800E, D810, D810A, D7100 and D7200 SLR cameras. These mostly fix bugs and issues with AF-P compatibility.

From DSLRBodies.com

A number of Nikon DSLR cameras got firmware updates today, basically to give them better AF-P support:

D4 A1.11 B1.11 — Fixed AF-P support and fixed another bug that occurs with Camera Control Pro 2
D4S C1.33 — Fixed AF-P support
Df C1.02 — Fixed AF-P support, another bug that occurs with Camera Control Pro 2, and corrected exposure for E-type lenses
D800 A1.11 B1.11 — Fixed AF-P support and fixed another bug that occurs with Camera Control Pro 2
D800E A1.11 B1.11 — Fixed AF-P support and fixed another bug that occurs with Camera Control Pro 2
D810 C1.13 — Fixed AF-P support and fixed bugs for multiple exposure and microphone sensitivity
D810A C1.03 — Fixed AF-P support and fixed bugs for multiple exposure and microphone sensitivity
D7100 C1.04 — Fixed AF-P support, another bug that occurs with exposure for E-type lenses
D7200 C1.03 — Fixed AF-P support and fixed bug for microphone sensitivity