Apple has released both the OS 3.1 SDK and the firmware beta for developer testing. As you might expect, it’s not just developers fiddling with the update. iPhone enthusiasts are compiling the changes, which include some nice improvements for on-the-go video editing and even native MMS buttons.

Here’s a quick list of 3.1 updates:

* Non-destructive video editing – When you edit a video in 3.1, you’ll get a prompt to save the edited version, or save both the edited version and a copy of the original.
* Voice Control over Bluetooth
* Vibration when you enter home screen editing
* OpenGL and Quartz improvements
* APIs to allow third-party application access to video controls and editing

OS 3.1 also updates the AT&T profile to 4.2 and updates modem firmware to 5.08.01. The profile update will hopefully allow MMS messaging when the full version is released. Beta testers have found they can create MMS messages but can’t send them.

I’m glad to see Voice Control over Bluetooth since, you know, being hands free is kinda the point of Bluetooth. I’m not sure why the vibration feature is necessary. It’s pretty clear when you enter home screen editing, but hey, maybe not for everyone. As for the rest, looks like we’ll have to wait to see what developers can do with them.

Just a few days before the iPhone 3GS hits consumers, Pure Digital Technologies, who makes the Flip series of digital camcorders has updated their software for improved sharing support. The Flip has been the camcorder of choice for many, especially for YouTube enthusiasts.

The new Flip software adds the ability for users to create channels with individual security settings, allowing them to share their videos privately, instead of relying on YouTube and other social networking sites to do so. Private sharing does not support HD playback, but for many that’s not the draw of the Flip. It’s ease of use they’re after.

Pure Digital has also announced an app for the iPhone that will allow iPhone owners to view the privately shared videos right on the phone. It’s an interesting move from Pure Digital, particularly with the video recording and editing features available on the new iPhone. Add to that the App Store approval process, which the Flip app will have to pass before making it to consumers, and it sounds like Pure Digital is pretty worried about their market share.

Their concern is probably reasonable, though the Flip line still offers enough benefits to keep them in people’s hands. For now, at least.