Unless you have a developer account with Apple, don’t bother plugging your iPhone into iTunes as we promise you’re not going to have access to it.. but developres can now get their grubby paws on beta 2 of iPhone OS 3.1. We’ll let you know if we see anything crazy, like usable Gmail, true background applications, or a notification UI that doesn’t make you want to throw the phone against a very hard surface at high velocity.

iPhone OS 3.1 beta comes with a public API that will allow users to manipulate live video, to connect their iPhone to the development machine via WiFi in order to run Instruments, while the tethering hack has been disabled so you should think twice before you install this update. Other than that Apple announced a lot of bug fixes, security updates, and other enhancements. I guess we will hear more soon, but we will know the full story when the final version of iPhone OS 3.1 is released.