Thanks to the guys of engadget to upload this Video Review of the new iPhone OS 4. Of course he is using a beta version of the still to release Operative System. We can have a look of the main new characteristics.
I am specially comfortable of how Apple make it so easy to create, name, delete, manage the apps folders.
The dock is now 3D, there is also Events and Faces in the Photos app, and a scrollable ZOOM function (5x Digital zoom). Bluetooth keyboards work perfectly well.