The big new addition is the new linking system (which Android users also get).
you could also now reorder your favorites by simply holding and dragging them up on the list.
Dropbox(Free) | iTunes App Store
Dropbox Adds Easy Computer Linking, Reordered Favorites, and More
iOS: The Dropbox app on iOS has been updated today with a couple of handy new features, including a new way to link a computer to your Dropbox account
