iPhone SDK Beta 4
Hot on the heels of their earnings call, Apple released the fourth version of the iPhone SDK beta. The SDK now supports OpenGL ES for the iPhone simulator.
The fourth beta version of the iPhone SDK includes Xcode IDE, iPhone simulator with Open GL ES support, Interface Builder, Instruments, frameworks and samples, compilers, and Shark analysis tool.
You can grab the update by logging into the iPhone Developer Center and clicking the download link.