Motorola has released a new software update NPLS25.86-17-3-1 for Moto Z in the Europe. The new update includes Android February security patch with fixes for Vulnerabilities and Exposures in the Android OS.
Also, the firmware update includes device stability improvements, bug fixes and further improvements for performance.
Software Update NPLS25.86-17-3-1 for Moto Z in the Europe is now available as OTA update. You can also check manually for updates, Go to Settings > About device > System update.