I have two Ipod touches for my children and both have OS 2.2.1 I have been contemplating updating the OS. I thought a version 3 something or other was out but is there a version 4 available and if not when is the new OS coming out? Next question...If I update one on my Itunes will it automatically update the other when I sync or do I need to purchase the upgrade twice? Forgive the probably trivial questions...I'm not an Ipod or Apple person. Thanks in advance for the help!