The look is not nearly the same as making the OS flat like MSs. And I think most people really want additional functionality...I'm not fond of emulating a hard book either, but that part is insignificant compared to functionality issues. It's scary when the first mention we get of some real changes have to do with skeumorphic rather than useful, functional updates.
I don't find the speculation worrisome. It's in Apple's interests to keep up usability even if they decide to redesign. And if they screw up the OS, I'll use something else.
The "flat OS" is one reason I do not like the Windows phones and their Surface tablets. No style; the color remind me of Windows for Workgroups/Windows 3.1. About all I can say is at least it is not Microsoft Bob. Yes, I said MS-Bob, Google it. Or even Bing it, if you prefer.
I might consider a MS-Surface Pro running Winstep Extreme, if at all possible. Way cool. Or rather than buy drunk and accidentally entering the new Microsoft Store, I might buy an iPad 128 GB tablet.