The new Beta “3” of OS 4.0 has been released for developers. But what…. Its already removed and changed to Beta “2” again. Yea that’s right avoid Beta 3, it is not sure why Apple removed Beta 3 but it is probably something serious “overheating/trashing of SDK folders” or something like that. But some developers got the change to test Beta 3, and we know some new features and fixes.

It fixed the camera bug, in Beta 2 you couldn’t save photos you created.
New design for the multitasking tray.
It runs more stable than the previous Beta.
An new animation on the unlock screen.
Portrait orientation lock is now present in the Quick Launch bar.