Facebook for iOS has been updated to version 6.0 today and with it brings some neat new features. Chat Heads are little circular images of your friends that float around your smartphones display, they will allow you to keep chatting to your freinds no matter where you're in the Facebook app. Android also received Chat Heads in the release of Facebook Home however a key difference is that due to the openness of Android Chat Heads can appear anywhere, in any application, unlike iOS. However they should still be pretty handy to iOS users who don't want to keep jumping back into the chat menu.
Facebook has introduced stickers in this update which you may notice is a trend lately, apps such as LINE and Path also have their own. Facebook says that stickers are a a "more visual way to express yourself in messages."
Facebook is also introducing updates to the News Feed, while minor on iPhone, on iPad they are very noticeable with bigger stories and photos.
You can grab the update right now on the App Store.