Fourth iteration and their pen tech is still inadequate for art. Apple nails it in their first attempt. Then matches its performance with a thinner, lighter, passively-cooled tablet with longer battery life, a better screen and better sound. When you look at the tech inside, almost every component has some smart innovation to make it more useful. A9X is innovative. The screen is innovative. The pen is innovative. Heck, even the Smart Connector is innovative. No gimmicks. They just invented a way to make something super-thin and light (and for good reason, if you plan on using it everywhere) and have a real friggin pencil that works like a real art tool (instead of making something that is worse than an entry-level Wacom stylus from 5 years ago). Yes, it doesn't have an eraser. Lack of innovation!
What Microsoft did is, basically, make the same tablet they made years ago, only better because of general advancements in tech. They get better performance then last year's models because of Skylake chips (made by Intel, not Microsoft), they got more pressure levels into the stylus, etc. Don't get me wrong - Surfaces are great machines. I'm intentionally downplaying Microsoft's achievement here - but, honestly, they are actually looking more like Apple then ever. They are not innovating, they are iterating and improving quality.
Microsoft is my second favorite tech company. But don't call Surfaces "innovation" - they are great, iterative products, but that's it. And please, really, please - just don't say Windows 10 is innovative. Just.... no.
Also, one more thing - Apple is doing what it always did. If you think it's not innovative - fine. But it's no less innovative than it was 2, 5 or 10 years ago. They follow the same modus operandi and they are, basically, the same.