Tumblr has updated their iOS app shortly after being acquired by Yahoo. The newly updated app features a redesigned user interface, with the biggest change being thebrand new post type chooser. It fans out vertically from the compose button, much like the fanning effect seen on Mac OS X's dock.
The interface is also similar to that of social networking app Path. Also new in the updated app is the ability to attribute posts made from a user's iPhone. It's not clear if the redesign is a result of the acquisition or if it was already in the works. The updated Tumblr for iOS app can be downloaded from the Apple App Store.