Facebook today released an update for it’s iPhone and iPod touch native application with push notification and sync Facebook friends with address book. These two significant features make the app even cooler with the last update’s cool new features.

Now you can receive push notification for below events. This can be configured in the iPhone’s settings.

• Messages
• Wall Posts
• Friend Requests
• Friend Confirmations
• Photo Tags
• Events
• Comments

Also, you can set it to reload the Facebook when you shake it and to vibrate while chatting.

Another beautiful feature in this update is synching Facebook friends with your address book in iPhone. When you enable this sync, your phone contacts details will be sent to Facebook and friends’ names, photos and other info from Facebook will be added to the iPhone’s contacts list. You can also set this sync to replace the photos in your contacts by the Facebook friends’ photos.

Because of this synching feature, iPhone somewhat gets the Palm Pre’s much acclaimed feature to link local contacts with social networking sites’ contacts.