What I found most interesting about MSFT's demo of Office on the iPad Pro (besides the irony of the change in relative power vs. Job's humiliation before Gates in the 1997 MacWorld introduction of the original iMac) was how poorly the MSFT products made use of the Apple Pencil. The pencil is designed to allow things like line thickness to be controlled by angles and gestures and yet the MSFT presenter was showing tapping a drop down menu to select line widths, as if this were just a repackaged desktop product (which it obviously is).
Apple was obviously responding to Surface with this product, but they've introduced some interesting refinements that extend the existing iOS ecosystem into new territory. I expect it to do well.
Apple could make serious gains in the enterprise market by adapting enterprise class functionality for security and configuration management. Apple has refused because they don’t understand business.