I imagine the unveiling already...
"We at Apple have invented a completely new and completely unique user interface that is just a joy to use and unlike anyone else in the business. iOS is still gorgeous, but we decided it was time for something new. Here it is. As you can see, it's even more gorgeous. Looking at the competition, we can say noone else has done such a radical, innovative departure from the norm as this. The UI is flat, and solid colors add to the simplicity and ease-of-use that Apple is known for. It's clean, fast, amazing, and now there's nothing between you and your digital life. Steve Jobs knew typography, so typography is a front-and-center element in iOS 7. Big text at the top of apps so you never get lost. We've integrated the famous badges into the icon's themselves because we can. And it looks even better. Mac OS X has "Aqua", but since mobile platforms are different, iOS gets "Modern". Truly unique, innovative, and truly... wait for it... revol"UI"tionary."
and before we know it, Microsoft somehow copied Apple.