It must be acknowledged that User Experience design best practices and principles undergo relatively little change year over year. And 2017 has pretty much the same UI/UX mobile design practices.
This is primarily because the goal of user experience design stays the same – make users happy when using your product and get a desirable action. Users still have two hands, ten fingers, two thumbs and pretty much the same level of tech endurance. That is why previous UX practices are still relevant and applicable this year.