Well I can count myself lucky that one of the Creamware folks informed me via email that the 4.5 software had nothing I didn't already have with my Scope Professional 4.0 buy 3 months ago. He saved me from upgrade fever and losing 98 euros or whatever that is in American dollars.
even if you already have all and every device the 98 Euro deal allows you to setup a 2nd recording box with at least what was formerly called the Pro-Pack.
Say as a backup machine or for live recording (for example)