The new beta is out and interestingly there are new gestures to provide quick access to the app switcher bar and switch between apps by sweeping left and right.
These will obviously be far more effective on the iPad than iPhone but are a great step forward to resolving what I think is currently a quite frustrating and un-apple like implementation of app switching on the touch devices.
There’s more
In addition to this TUAW has also confirmed that the orientation lock function will become a user definable setting and that the WiFi hotspot function will be there, although tethering will be required as an option with the carrier to get this to work.

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