Apple has released its first beta version of iPhone OS 3.1 to registered iPhone developers, along with an updated SDK. Listed as build 7C97d, the new beta OS appears to include non-destructive video editing, support for Voice Control over Bluetooth, and new modem firmware and AT&T profiles. The updated SDK includes updated OpenGL and Quartz APIs, as well as third-party developer access to video recording and editing controls. iPhone OS 3.1 beta…
