Mind-boggingly comprehensive iOS links list over at https://github.com/vsouza/awesome-ios. Well worth checking out (via @bcf_ant).
Tag: iOS
HTTPS in iOS 9
An interesting read about the large scale switch to https in iOS 9 for developers (via @bcf_ant).
The iOS Design Cheat Sheet
Great iOS cheat sheet aimed primarily at iOS 7 (via @bcf_ant).
iOS image size limit
Overview of Accessibility Features in iOS 7
Luis Perez has a detailed breakdown on the accessibility features coming with iOS 7. Good stuff Apple.