Mattt Thompson does a great overview of some of the little gems new in iOS 7s APIs. Along with some delightful commentary:
For the longest time, this boringly essential function was completely MIA, leaving thousands of developers to copy-paste random code snippets from forum threads. It was an omission as conspicuous and annoying as JSON pre-iOS 5. But no longer! iOS 7 finally bakes-in Base64:
Even though the number of people who have actually read something saved for later is only marginally greater than the number of people who have ever used a QR code, it’s nice that iOS 7 adds a way to add items to the Safari reading list with the new Safari Services framework.