Facebook app 2.0 comes for WP7 with performance improvement and push notifications.
Windows Phone 7 users who use Facebook app would know that it was a pretty pathetic app with lots of bugs and poor performance. But one thing they can be happy about now is that it has been updated for good. The new version 2.0 comes along with improved performance brings the much, much awaited push notifications system.
You should get an auto notification in the market place about the pending update, or you can manually update by searching for the app. When you’re done an option to enable push notification should be available in the settings. There’s a huge list of what events should you be notified of such as feed comment reply, Photo tag, Photo comment, Tagged photo comment, Photo comment reply etc and you can chose between tile notification, toast, or both.