Better iPhone 6s Display
One of the things we still want Apple to do is upgrade the iPhone 6s display to 1080P, like the iPhone 6 Plus. Apple boosted the iPhone 6 screen size to 4.7-inches and to 1,334 x 750 which is a pleasant upgrade, but it is still very similar to the iPhone 5s pixels per inch.
It is possible that we will need to wait for the iPhone 7 for this type of upgrade, but it would be a pleasant surprise for Apple to upgrade to a 1,920 x 1,080 resolution display on the 4.7-inch iPhone 6s. This would deliver a 468.7 pixel per inch rating on the new iPhone.