Apple has released the second beta versions of both the iPhone SDK 3.1 and iPhone OS 3.1 to registered iPhone developers. Notes for the new beta of iPhone OS 3.1 do not show any apparent changes from the first beta release, which included non-destructive video editing, support for Voice Control over Bluetooth, and new modem firmware and AT&T profiles; the first 3.1 beta release of the iPhone SDK offered updated OpenGL and Quartz APIs. iPhone OS…
