With the 2016 iPhone for all intent and purposes being the first placeholder non-S iPhone as Apple prepares for a radical redesign in 2017, reports are stating that Apple is moving to a three-year cycle wherein a meaningful body style revamp will be released once every three years, with the following two being S-level upgrades. Frankly I cannot fault Apple for this, as there are only so many times a mobile phone can be revamped at this point until we reach the idyllic smartphone with a perfect display in all aspects, incredible performance capable of professional desktop-level computing, all-day battery life, and indestructible characteristics. At some point Apple is just going to be reiterating the same designs until there are radical new technologies ready to incorporate. My personal concern, and this is very much a first-world issue, is that I've owned every single iPhone generation since the first and need incentive each year to keep this up for hopefully a lifetime so while I'd be okay with this I would prefer Apple doesn't get lazy. I want to feel like I'm buying a new phone, unlike how the Mac lineups only change internally for years at a time while my 2012 rMBP is no slouch and wouldn't feel inferior to the latest rMBP. Apple should have at least one killer feature lined up each minor upgrade year so that growth doesn't become totally stagnant.