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.
It's manufactured in India and carries the brand warranty. Yes, you can make calls with the help of Jio Sim.
You do not have to do anything special to avail Jio offer on Moto Z2 Play. Just when you start using the mobile, insert your Jio sim and it will get activated by the Jio company itself.
Yes, Moto Z2 Play does have the memory card slot.
Yes, Moto Z2 Play works perfectly fine with the Jio sim.