Starting as early as next year, software developers will be able to design a single application that works with a touchscreen or mouse and trackpad depending on whether it’s running on the iPhone and iPad operating system or on Mac hardware, according to people familiar with the matter.
Remember the many times I've written that I wish Apple would combine iOS and macOS into a single operating system that simply adjusts based on the device it is running on? That isn't what this is, but it is still a great step in the right direction.
Me, a little over a year ago, regarding the Surface Book with Performance Base:
I’ve long written on this blog that I believe Microsoft’s vision of one operating system for both contexts is better than Apple’s two-OS approach. John disagrees with me on this. And I don’t know that there is a right or wrong answer but there certainly is a preference. My preference is to keep my “power user” stuff at my fingertips for when I need them but to hide them when I don’t. The Surface Book does this.
When I was testing a Surface Book for a time I had what I felt is the best of both worlds. I came into my office, docked on a large monitor, and got to work. When I wanted to be mobile and work out of a coffee shop, I could be and everything came with me. Then, when I wanted to read on the couch I could undock the screen and use it like a Surface. Windows 10 would adjust to whichever context I was in. It was either optimized for keyboard / mouse input or for touch.
I still believe this is the correct approach. And we're starting to see more of it. Look also at Samsung's DeX that allows a phone to plug into a display and give you a slightly different interface, drag-and-drop, etc. for getting your work done. There are countless number of professionals where this type of setup would not only work well - but it would be ideal and less expensive or confusing than having disparate devices.
This proposed strategy for Apple, that Gurman says he has insider information on, isn't the same path that Microsoft is taking. It isn't one device and it isn't one operating system either. Gurman isn't saying that Apple is going to release a single OS for all devices but rather that the app binaries will run on multiple devices and operating systems. It is more akin to Microsoft's Universal Windows Platform. Many Windows UWP apps and games can run on Surface tablets, PCs, and Xboxes. This is amazing. I'm sure Microsoft users love it. Wouldn't it be cool if Apple allowed the same app to run on Macs, iPhones, and Apple TVs? Wouldn't that also allow many great iOS apps to suddenly be useful on macOS? I can think of many iOS-only apps I'd love to have on my Mac.
I welcome this if it happens.
I feel like these approaches are just stops along the road to a unified device that runs a single operating system and can work in many contexts. In some ways, it is the largest advantage that Augmented Reality will bring to the professional workplace. Put on your glasses and work however you'd like. Small window. Huge window. On a 3D object. Or on Mustafar with Tie-fighters flying overhead.
Until then, I'd love an iPhone 7 Plus-sized device that ran a single operating system that "worked like" iOS while on-the-go, and that I could plug into a large monitor and give me full macOS experience. That, for me, would be ideal. Until AR is ready.