I was just re-watching the WWDC 2013 keynote, and I notice that while Craig Federighi was demonstrating the new full screen apps features, there was a huge picture of Yosemite Park being edited on some photo application. Was this a coincidence? I don't think so. Also, I bet there were many other hints on there as well, and we can guess there will be more hints on tomorrow's event. Thoughts?