Yes, Moto Z2 Play 64GB comes with latest 7.1 Android OS so you may not require to update it immediately but going forward, company will produce OTA updates.
Yes, Moto Z2 Play is a metal body phone.
Yes, Moto Z2 Play does have the memory card slot.
Standard packaging includes Mobile Phone with in-built battery, FREE Style Mod, USB Type C Cable, USB Power Adapter, SIM Ejector Tool, User Manual and a pair of Headphone.
Moto Z2 Play comes with Water repellent nano-coating**. Advanced nano-coating technology creates a water repellent barrier to help protect against moderate exposure to water such as accidental spills, splashes or light rain. Not designed to be submersed in water, or exposed to pressurized water, or other liquids.