They just broke the cycle by releasing what is essentially the 6ss (i.e. A phone with virtually the same exterior design but with spec bumps). I don't think they'll do it again by releasing the 6sss (i.e. 7s) in 2017. I think the stage is set for a major design overhaul for 2017.
We need an overhaul and I hope the logic you've stated is correct. You're right though, it does feel like a 6ss.