Tumblr redesigns their dashboard, adding new functionality. We are looking forward to testing out the new navigation further. At first glance it looks like Tumblr has done away with the controversial “tumblarity” ranking system. Though don’t count on it: “We’re about to totally overhaul the Directory, along with the Activity page and Tumblarity which power it. In preparation, we’ve taken both of these pages offline while we make changes.”
—tumblr staff blog

staff:

After several weeks of parsing through your feedback and making adjustments, the new Dashboard nav is up!

Just two things to note:

• To fix the issue with unnecessary unread counts on blogs you’re already following, we now only show unread counts for private blogs.
• We’re about to totally overhaul the Directory, along with the Activity page and Tumblarity which power it. In preparation, we’ve taken both of these pages offline while we make changes. More soon!