iOS 7 likely to be flat ... and black and white?

Apple has scheduled the keynote address for the annual Worldwide Developers Conference (WWDC) for June 10. On that day, we expect to hear the latest about the company's mobile and desktop operating system. It's the mobile operating system, or iOS, that has our attention in particular though, because the rumor mills are predicting some dramatic changes.According to 9to5 Mac's Mark Gurman, his sourc...