Bill Heyman from Code Morphic led a discussion on varied topics from WWDC 2009 and iPhone 3.0 SDK features.

• CoreLocation adds compass data.
• OpenGL ES 2.0. Takes advantage of new GPU in iPhone 3G S hardware.
• Grand Central Dispatch available in Snow Leopard.
• Clang and LLVM briefly. Clang will be part of Xcode.
• "External accessory" third party hardware devices connected through the dock connector. "made fo...