Facebook, the popular social networking site, turned six late last week. To celebrate its sixth birthday, it revealed a new design that we rumored about in December last year. It also revealed that Facebook now has 400 million users, up from 350 million just a few months ago, indicating Facebook’s exponential growth even at the level that few Internet companies get to and certainly slow down eventually.

The redesign is expected to make navigation easier with few new twists to present existing information. Facebook founder Mark Zuckerberg also promised that Facebook will innovate more quickly and release at least one cool feature every month.