There may be times when you don't want to answer your phone at all and Apple has you covered there, too. iOS 6 features a new system-wide Do No Disturb feature that can be manually turned on or set to activate during customizable hours.

The new Do No Disturb option blocks all calls and notifications, stopping your iPhone from lighting up in the middle of the night with alerts and unwanted calls.

Do No Disturb does just that: blocks all calls and notifications, which effectively puts an end to your phone lighting up in the middle of the night for alerts and unwanted calls. You can also create a custom group of people whose calls are allowed to go through no matter what, even if Do Not Disturb is on. There's even a setting that allows a call to get through if the same phone number calls more than once within a three-minute time span. That's designed to help a caller connect in case of an emergency. Do Not Disturb can be activated through a toggle in the Settings app; specific preferences can be modified in Settings>Notifications>Do Not Disturb.

Last year, despite its beta status, Siri was the star of the show; this year, while the technology is still official in beta, she's up to new tricks.