I will be receiving my iPhone 4 this week. I am upgrading from the 3gs. I did jailbreak my 3gs but I don't think there is enough that I dislike with 4.3.1 that I will jailbreak my 4. I like having my calendar on the lock screen but not just a picture of my calendar - lock info is really good. Does anyone know of anything like LockInfo? And I liked the BiteSMS that I could reply and not leave my app that I was in - any similar for non-jailbreak phones. Those are the only 2 things that I was using.