There's no visual overhaul as it just did yesterday with Facebook Messages, but Facebook has now announced an update for its iOS app that promises some fairly big improvements of its own. According to the company, the app was "rebuilt from the ground up," and is now twice as fast as the previous version. That includes a faster opening of the app itself, smoother and faster scrolling, and photos that are said to load "instantly." Unfortunately, we're not able to test those claims ourselves just yet, but Facebook says that the update (version 5.0) will be avai
