Outlook and OWA Version and Features

Over on the TechNet Wiki site there is a great comparison chart between Outlook 2003 through to Outlook and OWA 2010.
While the acronym for OWA has stayed the same over the years, the definition has changed from “Outlook Web Access” to “Outlook Web App” in 2010.
Have a look here: http://social.technet.microsoft.com/wiki/contents/articles/outlook-and-owa-version-and-features.aspx