Facebook is testing a new format for user Timelines, which puts all posts in a single column on the left and any activity modules in a narrower column on the right.
This layout addresses one of the common complaints about the new profile: users previously had to look back and forth on the page as they scrolled through to read their stream. Some users found the two-column layout frustrating. With this design, the line down the center has been removed, making the profile look less like a timeline. However, the timeline of dates still exists in the top right of the page to jump to a particular month or year.
In this test, the publisher and all posts beneath it have gotten wider. Modules like “Recent Activity,” “Friends,” “Places” and those for any Open Graph apps are all to the right, similar to how they are on the original Timeline. The difference in this design is that these modules are no longer the same size as posts, and when there are no more modules to show, the Timeline appears blank rather than filling in with status updates or wall posts.
[Update: Another difference is that life events and other highlighted posts don’t stretch across the page when they are starred. In the orignal Timeline design, when a user highlights a post, it appears larger than others. Now, posts simply get a blue banner in the corner but otherwise remain the same size as standard posts. Although this design isn’t currently being tested on brand pages, this could be something that eventually affects them.]
Facebook confirmed that it is testing this design with a small percentage of users but did not offer any additional information.