When millions of users hit the download button once iOS 7 becomes available this fall, it's going to take some time to get acclimated to all the new accoutrements. New buttons, fonts, shapes and colors are hiding around every corner, and just about every little detail has been refreshed, from the battery icon to the semi-translucent folders.
Still, there's a certain familiarity to iOS 7. Wildly different as it may be, it retains the simplicity and intuitiveness that we've enjoyed for years. Icons still adhere to a neat grid, navigation uses the same swipes and taps; essentially, the interface changes in iOS are superficial, focusing on design rather than changing what we know.