A much nicer icon

Sparkle automatic updating

A dock menu with the 10 most recently uploaded items so you can re-copy URLS to the clipboard

Auto-close after an upload finishes, so Dockdrop is only open when it’s actually doing something

Hot key uploading - this lets you choose a shortcut to use to trigger an upload of the selected item from the Finder, iTunes or iPhoto
SCP public key support

The upload progress window can now be moved anywhere on the screen and its position is saved

Various other bug fixes and improvements