For me, the most exciting announcement has to be the line of Smart Covers.
iPad covers aren't new, but this cover looks like it could solve the ergonomic problem of typing on your iPad or watching a movie/TV show while you're not sitting on a couch. It also protects your iPad's screen without adding bulk.
EDIT: @marcoarment: "The Smart Cover might be the best feature of the iPad 2. I can't possibly express how much I hate every iPad 1 case for some reason."
iPad covers aren't new, but this cover looks like it could solve the ergonomic problem of typing on your iPad or watching a movie/TV show while you're not sitting on a couch. It also protects your iPad's screen without adding bulk.
EDIT: @marcoarment: "The Smart Cover might be the best feature of the iPad 2. I can't possibly express how much I hate every iPad 1 case for some reason."
[0] http://www.apple.com/ipad/smart-cover/