Well, I was setting a few custom wallpapers and set one as the lock screen. Only to find out, that will you receive a push notification, iOS 7 blurs the wallpaper making it utterly pointless! And no. If I turn the screen off then back on, it does not cause the blur effect to go away. It will stay like this until you view the message(s). Disappointed. I had to go back to a stock photo.