1) Has Microsoft finally gotten the message from the PC gaming community?2) Are we going to see a PC gaming revival like never before?
3) Best Windows Ever
1. There is no "message". Are you suggesting we've got companies like Ubisoft, EA, Activision/Blizzard, Steam and the other big players running a super-secret whisper campain nobody knows about? Or perhaps a bunch of gamers rather than the industry have some single thing they are universally claiming something?
2. A PC gaming revival? Others have already covered this. Look over Steam's history if you think PC games need a revival. I've got a backlog of amazing PC games that I don't have time to play.
3) Being the "best Windows ever" is a complete marketing claim.
Windows does lots of things.
As an OS it manages hardware resources, and it has done a good job of that for many years. The abstractions for I/O systems and other resources are rock solid. The biggest issue they had on that front was third-party code, and WHQL certs have mostly addressed that.
They do a good job of providing other OS services, such as task scheduling, task management, resource cleanup after task death, interprocess and multiuser security, those work great. Virtual memory is invisible to most programmers, and has been for decades. No worries about corruption from other tasks.
Also "best" depends on your features. Microsoft has differentiated between their server and client operating systems for several years, such as a completely different network stack since a regular desktop machine tends to have very different networking needs than a server.
Most end users think of "windows" as the boot screen, the start menu, and the desktop management. While these are customizable and replaceable, very few PC users will do that, using the default shell, default file manager, and other built-in components. As their most visible components these are what most people associate as the OS, even though it is one of the least critical services it provides.
As far as the core OS goes, Microsoft has always done a great job of keeping up with hardware.
As far as the eye-candy shell and UI goes, they have had some missteps (especially with Windows 8) but that is different, easily replaceable software. Classic Shell and LiteStep are probably the biggest of these. But the shell is not the OS, even though that's what most people think of.