I read about this on tech crunch; seems no one has posted it here yet.
Apple has a few new patent applications with the USPTO (via AppleInsider), all relating to sapphire glass displays and elements for its use in mobile devices. The patents cover a method for making sapphire glass display covers stronger, a way to create illuminated buttons with sapphire, and a way to embed markings below a sapphire layer.
I believe the iPhone 4/4s designs were the best Apple has ever done, and to think they might actually be going back to that design, makes me very excited.
This is probably going to be in the iPhone 7, though.