Hello Tumblr fans! On October 20, 2014 Tumblr announced a new interface that will simplify the dashboard. Two new features were add: sticky header and wider posts.
Tumblr Staff Announcement:
"Two li’l changes to the dashboard rolling out right now…
- Sticky header: Scroll all you want and still make posts, search for things, check your messages, see your loyal Tumblr logo, etc.
- Wider posts: We went ahead and did it. There was no reason not to."