John Siracusa, on what he anticipates in the visual design of iOS 7 and OS X 10.9:
I expect Ive to focus on harmony between the look and feel of the software, the materials and finish of the hardware, and most importantly, the intended purpose of each specific application.
While I’m excited for the unveiling of both, OS X 10.9 seems to intrigue me more due to the inattention paid by others to it. It’s quieter and subtler, but I think it’s the area where Apple can experiment to a larger extent because its customer base is so much smaller and less diverse (what’s the ratio of professionals to grandparents on Macs versus iPads?).