Apple has this evening given iPhone developers the latest iPhone SDK and the accompanying OS.
iPhone OS and SDK 3.1 first saw light of day just two weeks ago and brought with it a number of enhancements including non-destructive video editing and Voice Control using a Bluetooth headset.
Beta 2 which was released today is likely to include other enhancements, it is unknown when Apple intends to make iPhone OS 3.1 available to the public.