Avatar Menu Change on Tumblr Dashboard:
Tumblr is gradually rolling out a change to the avatar menu on the desktop dashboard. Now when you place you cursor over an avatar, Tumblr reveals three sample posts and the username with blog title. There are also separate items for the “Ask a question/Send fan mail” drop-down menu and the follow/unfollow button.
Aug. 20, 2013 Update: This change also extends to any usernames (author and reblogger) in the upper left of the post.
You know, not to raise any concerns, but this looks an awful lot like what Tumby’s Chrome extension does. Here’s an example from the dashboard:
The plugin’s been around for a little bit—I posted about it a few weeks ago. While it’s not exactly the same, the approach is pretty similar.