I heard that developers (those who create Facebook applications) can get a preview of the new Facebook Timelime. How exactly does one enable this beta preview?
To enable Facebook timeline, go here: http://www.facebook.com/about/timeline
Hit: "Get Timeline."
Warning: Once you activate your timeline, you will not be able to go back to the original layout. According to this article, all Facebook users will soon be required to switch over to Timeline view.
Here is one set of instructions. Basically, all you have to do is search for "developer", grant it permission, and create an app (it doesn't have to be a real one).