The update brings a new interface for posting content. The post options appear as colorful icons designed to make it easier to post items with a single click.
You have access to a variety of one-click posting tools including: video, chats, links, quotes, photos and text.
The new method is quicker than the previous method of posting which required you to hit Tumblr's compose button, which then opened a new window of icons.
The update also includes a way to attribute app sources in posts that are shared on Tumblr.
The timing of the release seems unrelated to Yahoo’s big announcement, though it underscores a commitment to mobile that both companies share.
Yahoo's CEO Marissa Mayer weighs in on Tumblr
In a Tumblr post of her own announcing the acquisition, Mayer said the combination of Tumblr and Yahoo could grow Yahoo’s audience by 50%, to over a billion visitors a month. She also said the Internet giant’s traffic could grow 20% as a result of the deal.
“In terms of working together, Tumblr can deploy Yahoo!’s personalization technology and search infrastructure to help its users discover creators, bloggers, and content they’ll love,” said Mayer.
“In turn, Tumblr brings 50 billion blog posts (and 75 million more arriving each day) to Yahoo!’s media network and search experiences. The two companies will also work together to create advertising opportunities that are seamless and enhance user experience.”