Facebook has always maintained consistency and never revamped its interface all at once to a high degree. The reason could probably be that Facebook is an extensive software and changing it largely would cause confusion among the users. It seems to have reached a point where it had become inevitable for it to better up its user experience by making some small tweaks. Facebook’s new user interface has adopted a philosophy where it lays emphasis on its posts. Looks like some inspiration has been taken from Instagram itself, which displays substantial breathing space to focus on images.
