If you have DWG TrueView 2008 installed see Help>About and you will see the Build Version. Mine had R18.104.22.168 before (beta) and when I today downloaded and installed DWG TrueView it said R22.214.171.124 (x86). This version is the first officially released one dated from Mars 2007.
Autodesk's website does not even say that it is DWG TrueView 2008.
Notice that DWG TrueConvert is included and cannot be downloaded separately as it could before.
Update: Here is the link to download DWG TrueConvert 2007.