There should be box in ACP with list of installed apps and comment if installed version is up to date or outdated. Because of [url=" Release Schedule we get every week one updated version but not every administrator has time to install and upgrade system each week. So I need to know which apps are updated and which not because I don't have place in my memory which apps I upgraded last Tuesday or two weeks ago. This box should reminds us what we need upgrade and what is already upgraded. Thanks :)

Well,

You can see the version numbers at

System -> Manage Applications and Modules

You can see your version but you don't know if your version is up to date.