There has been some different opinions on this, some say it will be this year while others say next year, but would it make more sense for the iPhone 7 to have a design change (i.e. the all glass design) this year and then the OLED screen added in next years (2017) model with it being an S version it would match what Apple usually do, number models get a design change while the S models get more features. http://www.abplive.in/gadgets/iphone-7-may-sport-an-all-glass-casing-325846
Maybe they're doing a refresh every year
Still, it does seem weird that we're getting so many reports for the 2017 iPhone. Has this ever happened for a phone so far away?