31:24 Introducing Safari View Controller
42:46 Managing 3D Assets with Model I/O
39:48 What's New in Core Motion
52:41 Your App and Next Generation Networks
51:54 Apple Watch Design Tips and Tricks
54:48 Designing for Apple Watch
35:40 Swift and Objective-C Interoperability
38:37 What's New in LLDB
41:20 Privacy and Your App
34:32