One thing I learned from watching the iPad video was that you can swipe any place on the lock screen to open. That will save some time in storytime!
In the iPhone video, I wasn't aware of the ability to see all the links that have been shared on Twitter in Safari, or that you could search for what someone is saying on Twitter with Siri. I want to make Siri try to pronounce all the names in my contacts so I can correct her too!
One of the new features that I don't like is the easy "Burst mode" method of taking pictures. I end up taking many more pictures than I intend while waiting to capture the right moment during programs. It is easy enough to delete the unwanted ones, but when you're taking pictures throughout an hour-long program, can quickly add up to be a lot of space!