I have the most recent versions of iLife, iWorks, and Office for mac. The new versions are expected to come at at some point. I am plan to get the most recent versions of these programs when they become available. My question is, do I need to uninstall the previous versions before I install the lastest ones or can I just install the lastest ones immediately without uninstalling the old versions. If I do need to uninstall old versions what happens when I don't do that? I would like to know what happens to the old version after I install the newest version.