Apple on Monday continued its aggressive release schedule for the next major version of iPhone OS 3.1, releasing another beta to developers. iPhone OS 3.1 Beta 3 runs a hefty 307MB and is available to developers that are part of Apple’s iPhone developer program. As reported by AppleInsider, the company also released a new iPhone SDK on Monday as well.

The betas include the ability to use voice control over a Bluetooth headset and save a copy of trimmed video, among other changes. The update will also reported support augmented reality.

The new beta is available from Apple’s developer Web site.