[nickh]

A list of some of the new features found in the developer seed of iPhone OS 3.1 has been compiled by the iPhone Blog.

Currently known changes:

- Non-destructive video editing now gives you the option to trim your clip then “Save as copy…” rather then replacing the original clip.
- Voice Control now works over Bluetooth
- iPhone vibrates when moving icons
- Updated AT&T profile to 4.2
- Updated modem firmware to 5.08.01
- Improvements to OpenGL and Quartz.
- APIs to allow third party apps to access videos and edit them.

If you have found anymore changes or improvements please let us know in the comments so we can add to the list.

IMPORTANT: The baseband update to 5.08.01 likely means the ultrasn0w unlock has been blocked. Please do not immediately update when this firmware goes public

Source: iClarified - Apple News - New Features Found in iPhone OS 3.1

[equlizer]

Voice control over BT is better than anything i can ever ask for, even a jailbreak! (well maybe not)

[A_DuB187]

Too bad i got to skip this upgrade for my 3G S in order to jailbreak later on.

[GrabYourWeapons]

Now all we need is AT&T to step up and fix MMS on all iPhones! Haha.

[bengo]

And Apple needs to fix Bluetooth. I just got a BB from work and the BT on it is soooo much better. Works perfect with MS Sync ( rental car ), while the iPhone cuts out every 15-20 seconds or so ( this also happens on my Pioneer deck).

It needs the Bluetooth Remote Controls added on as well. I can't believe they put in A2DP without that.

Also, it needs to start media playback on BT connection with a paired A2DP device.