What we have with the 7/7+ is a refresh of the existing phone. Given that next year is the 10th anniversary of the iPhone I expect next year's model will have all of the latest tech on it and be a true new model. Having increased their prices this time, if Apple keep the prices the same next year then that will be the model to get. The contract on my 6 is up shortly and I'll be going on a sim only deal then and waiting to see what 2017 brings.