Yup, I just purchased the 6.5 upgrade off their site with my old 5->6 upgrade serial number. Its 125 bucks for the upgrade, but apparently is made for Tiger (thank goodness) and supports the latest QT 7 stuff, etc etc. I've used Cleaner since the 4.x series and sure hope Autodesk keeps the ball rolling this time. Haven't installed it yet but its sitting here on my Tiger desktop begging me to, so off I go. Woohoo!