The decision to renounce displaying HTML5 content was not easy. But by doing so the overall performance of the application was doubled.
Facebook decided to take the optimization even further. They first figured out the three key points that needed to be optimized in order to make the application load and work faster. The first point was the improvement of the application loading time. The next two points were improving overall performance for news feed and image navigation.
The update brings some useful features as well. Users can view the Timeline interface and can use some touch gestures for browsing photos. The new Facebook application behaves well and loads very fast. The only downside is that without HTML5 content support the update system is not as fast as it used to be. Facebook has a temporary solution for this problem: HTML5 is still used in some parts of the application.