Improved News Feed - Improved News Feed interactions enable you to scroll through your News Feed without accidentally clicking “Like”.
New Navigation Control – The new version utilizes a drop-down navigation control that is scalable to support new features in the future.
Notifications Bar – The notifications bar offers an easy way to access your Facebook Notifications, Messages, Friend Requests and Chats from anywhere in the Facebook application.
External Notifications – The external notifications header lets you see when you’ve received a new email message or BBM message without having to leave the Facebook application.
New Profile UI and Profile Information Viewing – The Facebook app now includes the ability to view key information on Profiles and Pages, such as contact info, basic info like birthdays, hometown and relationship status, and likes and interests.