This is Infinite. It's been almost three years since the first release of Infinite hit tumblr. The latest version demonstrates how far web technologies have advanced since then.
Smart Columns - Choose any number posts and make the grid use the whole screen. iPad optimized - iPad users will see your posts in 2 columns. Full Screen Background - Use a photo as your background. This will fill the whole screen. Highlight posts - Add a tag of #highlight to your post to make it stand out on your blog. The post will become enlarged. 1 Click Like & Reblog - Straight from the home page, no need to visit the permalink. Social - Twitter, Facebook, Pinterest & Google + buttons on the permalink pages. 4 Post display states - Either show posts on their own, posts with a caption, posts with tumblr controls or show all. Google Analytics - Just paste in your Google Analytics ID and that's it.