Verizon is now rolling out software update NDNS25.137-24-1-4 for Moto Z Play Droid in the US. The new update includes Android March 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 NDNS25.137-24-1-4 for Moto Z Play Droid in the US is now available as OTA update. The update will gradually roll out to everyone. However, you can also check manually for updates, Go to Settings > About device > System update.