The redesigned menu is similar to the radial posting options used by social networking app Path, which displays buttons unobtrusively in the corner of the app. Previously, hitting Tumblr's compose button opened a new window with square-shaped posting icons, which was more obtrusive than the current overlay design.
Tumblr's update, which was obviously in the works prior to the Yahoo acquisition, also includes app attribution for posts from iOS devices, a feature that was not previously available for mobile posters.
After multiple weekend reports that Yahoo was planning to buy Tumblr, Yahoo this morning announced that it had indeed purchased the blogging platform for $1.1 billion dollars.
According to the company's press release, Yahoo plans to allow Tumblr to operate independently as a separate business, with current Tumblr CEO David Karp remaining in charge of the company.
Tumblr for iOS can be downloaded for free from the App Store. [Direct Link]