Moto Z Play Droid receives security update
When the notification arrives on your Moto Z Play Droid, before agreeing to continue with the updating process, make sure that your handset is connected to a Wi-Fi network or a strong Verizon cellular signal. At the same time, make sure that your battery is fully charged before downloading and installing the update.
Because software version NDNS26.118-23-1 is coming to you via an OTA update, it is disseminated in waves. This means that not all Moto Z Play Droid owners will receive the update at the same time. You can patiently wait for the notification to arrive, or try to coax it out of your phone manually by going to Settings > System updates > Check for System update. If that doesn't release the notification asking you to download and install the new update, hold on. It should arrive via an OTA notification any day in the not too distant future.