Random discovery: You can unlock iOS 7 by swiping the other way
We all know you can unlock an iPhone by swiping left to right. But in iOS 7 you can swipe the other way too. You can't just swipe the other way though, you must:
1) Start dragging from the right most edge of the screen
2) Drag to the left most edge and HOLD for around 2 seconds
3) Let go.
The potential energy that you accumulate will unlock the screen when you let go.
I don't know if this is intentional, but it's cool nonetheless!