When in an app (not on the home screen), 4 finger flick left or right will switch between running apps.

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No longer need to be on 4g or Wi-Fi to use voice dictation: can be offline with no internet connection.

Correction: in the demo I say it just works automatically.  However, if your language supports offline voice dictation you may need to turn it on in Settings, General, Keyboard, Dictation on/off toggle.  I dont' know why, but my setting was on by default which according to some blogs will be turned off by default.
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How to secure your notes produced by the default Notes app with either a password or finger print.

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Demo of new 3d touch options for Settings, Weather, Compass, Health, App Store, and the iTunes Store.

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Where to turn on Night Shift mode if you wish to reduce the amount of blue light to help you go to sleep.

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