"Of course it's worth the update."4.0 starson by CarpeDiem757
Pros: Web browsing in Safari can now be utilized in landscape without the tool bars.
Do Not Disturb mode is a life saver
Much more options for email
Tap to Tweet or Tap to Post feature in the notification center
Sharing pictures is much more user friendly
Cons: I miss Google Maps.
Summary: The pros most definitely outweigh the cons in my opinion, so why wouldn't you update?