Software Update

I have the s6 edge SM-G925I bought it from Saudi Arabia. I live in Egypt. I received the 5.1.1 update 2 months later from its release date. And now the update that brings the s6 edge plus features to us is out from 1 September and i still haven't received it. If you please i need any solution to receive the updates on time it is really frustrating. Thanks in advance fellows. Also my play store is up to date but the interface of the store is still like the old one