LifeProof's new phone cases (called Nuud) create a waterproof seal around your screen which allows you to have all the features of a waterproof phone without the bulk and loss of touch. We checked this out at the LIfeproof booth and were pretty astounded that a case could seal around your screen. Definitely something to consider if you need protection for your iPhone out on the water.
They also have an attachment that makes your phone float. It adds some bulk, but as someone who's personally seen a phone drop like a brick in Logan Martin, that sounds pretty awesome.
LifeProof also showed off a new case for the iPad Mini.