Dropbox has been updated to version 3.0 and it brings with it an all-new, all iOS 7 look and feel. That includes a smoother, faster iPad experience with easy-to-toggle full screen mode. You can share more easily, including via AirDrop. There's also video saving, and enhanced PDF viewing.
It definitely scores highly on the deference and clarity scales. Clean, crisp, and consistent. If you like the core principles of iOS 7, you'll like this update.
If you're already using Dropbox, the update is ready and waiting for you. If not, check it out on the App Store now.