The concerning part of this is how little Apple did to get ahead of the market saturation problem before it started impacting sales. They had plenty of warning. Analysts have been predicting this for years. They waited way too long to release iPhones with larger displays. Then it takes more than a year to update the 4" model and when they do it gets released with a nearly identical enclosure to a 3 year old phone. Current rumors suggest the iPhone 7 may share a very similar design to the iPhone 6/S which is just baffling to me if true. When market saturation is a problem it seems like the absolute worst thing you could do is keep recycling 2-3 year old designs.