Media event set for September 9, launch likely ~10 days later.
Apple Releases Beta 3.1 iPhone Firmware and SDK to Developers
Even with the recent release of iPhone 3.0, Apple is hard at work at the next update: iPhone 3.1. Apple seeded registered developers with a beta version of the firmware and SDK today. Few details were provided as to the improvements to be found in the new firmware. The latest build number is 7C97D.