Apple is coming to a cross road that it did many times successfully. They need an innovative product and iPad Pro is not innovative enough to be the one.
There are several products including Apple Watch, Apple TV, Apple Pay... They are not enough to keep sales at the current level when iPhone sales is deteriorating. However, when they integrate together and in the long run they could lead us to the promise land. Watch out for what Korea and even China doing the same.
When iPhone integrated the phone, iPod, GPS... into one device, it is innovative at least in marketing (as many companies in Asia had done sth similar at that time).