Facebook announced a new user interface for profiles called Timeline. Mark Z. reconceptualize how profile pages should look. According to him Timeline shows a fuller view of the present and a summary view of the past.
Follow the steps here on how to enable Facebook Timeline before public release. Here’s what it looks like.
Know more about timeline here.
peachicecream.wordpress.com 
How to turn on your Facebook Timeline right now :
http://yadavjpr.wordpress.com/2011/09/26/how-to-turn-on-your-facebook-timeline-right-now/
timeline is very cool