It took a while for the next update to come but the App Store just approved Facebook version 3.1 “4 months after version 3.0?. The previous version missed two important thing. Push Notification and contact syncing. With this new update facebook finally included these two options, something a lot of facebook users where looking for.
When you update to 3.1 you will get Push Notifications as things happen on Facebook.
Facebook 3.1 also adds the option to sync Facebook friends with your iPhone address book. You can download the update through the App store now