Microsoft's vision of unification wasn't just from an engineering perspective. The company also wanted a unified user interface across all its devices.
Now let's think about that for a second. Traditional PC users (both desktop and laptop) were used to mice and keyboards. They had been using these two devices pretty much since the advent of the PC. Various companies had also managed to add support for other input devices over the years, but no one was really using a touchscreen on the desktop.
Microsoft's presence in the tablet market was non-existent, for all intents and purposes. Very few "tablet PCs" existed, running full versions of Windows 7 with the lowest power Intel Core processors available at the time. They were heavy, didn't have great battery life, and only seemed to be useful for designers and artistic folk, who'd use a stylus to draw.
Most people were either using iOS or Android tablets, and few people were clamouring for a Windows equivalent of these two.
Finally, let's consider the phone market, where Microsoft had slight success with Windows Phone 7 and has since had a little more with Windows Phone 8and 8.1. Its market share was fairly insignificant, and the company would have really needed something special to make things work out.
There were, at the time, around 1 billion Windows PCs in the world, 99 percent not using a touchscreen monitor. Less than 5 percent of smartphones ran any version of Windows Phone, and there were barely any tablet PCs. In that backdrop, Microsoft's decision to release an OS that was optimised for touch-screen devices, rather than traditional input methods, seems premature to say the least.
What's worse is that the UI was aesthetically, and in many cases functionally, seen as a regression from Windows 7, which is still the most popular PC operating system. Bringing back the Start Menu is an example that Microsoft is backing down from its aggressive way of teaching users new behaviour.
After two years of bug fixes, patches, question marks over the future of Windows RT, and an awkward operating system that was arguably a bigger flop than Vista in terms of adoption and user satisfaction (despite being technically more sound), Microsoft has slowly come around to accepting the reality.
September 30 is the speculated date for the "preview" version of Windows "Threshold", also informally called Windows 9 by most of the tech press. Siteshave generously leaked videos and screenshots of a legit-looking preview build of Threshold.
Looking at the videos, you'll be able to see that the interface is still mostly flat and boring like Windows 8. I'm curious as to why they made an OS as pretty as Windows 7 and then went back to the flatness of the Windows 3.1 days, though that's down to personal taste.
Moving on, we see the return of the start menu , just with tiles thrown in. If you compare this start menu to the present one of Windows 7, it strikes me as less useful, as it simply links to fewer things. The entire right column is filled with tiles. What used to be in the right column (Control Panel, Documents, etc.) end up as pinned items, quite obviously taking up space used for pinned programs in Windows 7.
Of course, when compared to Windows 8, this is much better than making obscure "charm" gestures, or receiving a face full of that jarring start screen.
Metro (or Modern) UI apps can now be (mercifully) run in windowed mode, and can be minimised. While some may question the utility of these in the PC version of the OS, the main complaint with Windows 8.x was not having a choice, so I guess this is step in the right direction. The same goes for the existence of "PC Settings" when the Control Panel exists, and two different calculators, one for touch screens and the other being the old one we're used to on Windows 7. Of course these are still early days, and all this may yet be fixed before Windows 9 reaches the consumers.
We'll also most likely see virtual desktops, like on Linux systems and OS X. You can switch between different desktops, and have different windows on each. This would, in theory, allow you to switch between multiple workflows. The actual implementation looks a bit sketchy, however. I'm specifically talking about window management; the creation, removal and navigation of virtual desktops looks good enough.
Long story short, from whatever we've seen so far, Threshold seems like a mixed bag. It's sort of Microsoft saying, "Hey, we made really bad decision with that Modern UI stuff but here's a compromise." But it's clear that the company still hasn't quite let go of those tiles, which suggests the company is continuing to walk the tightrope between listening to user feedback and going ahead with what it believes is the future of Windows.
Microsoft must keep in mind that the function of a good operating system is to provide a stable and secure environment for applications and users to interact in, not sell itself as one giant overblown "app".
Unifying the interfaces of PCs, tablets and phones wasn't a good plan either, as Windows 8 proved. Three different type of devices and two different input models can't be fitted into one box. Even Apple and Google keep PC and mobile separate, so one wonders if Microsoft is on the right track with its one size fits all policy. Kernel code sharing doesn't mean having a common UI. And blindly sharing features is known as taking a shortcut.