so you mean you don't have 4.8/pro. Good news, you can't buy it anymore. You're gonna have to choose between V5/free, V5/pro, or V5/IS.
ps: if you do have 4.8, you can compare yourself its features (present on your system) to the reference table of V5...keeping in mind that all equivalent features (when compared to V4) on V5 are more advanced obviously...hey, it's a new version.