When you said 'S series', you are probably talking about the flagship devices but I'm sorry to inform you that the software updates don't necessarily need a flagship device. That's where you'll find a better customer satisfaction when you go for Xiaomi, Nokia and OnePlus. Of course, I'm talking about both the low cost and the midrangers. Also, new features are introduced with newer OS. But the sad part is, Oreo for Samsung phones doesn't bring much improvements. So, yes, expecting more features from Samsung is meaningless. It's better to go for the one that listens to it's customers. Lastly, if Russia got the update a month ago, why the **** we aren't allowed to have the same software? Are we not in their priority list?