c1rcle, I believe the upgrade list obsessed was referring to is the digital content manager, which I believe keeps track of usage for content i.e. adobe books ect. that request it. It allows content publishers to limit a persons usage of a digitally downloaded medium.
The concern I have is will companies be required to support re-registrations after they end support for a product? IE: when poser 9 comes out and one has not upgraded and you have to reload poser 5 will you be able to? These issues have to be resolved, I think some of the motivation for the protection is to reduce piracy but I believe, someone also saw the potential of forcing people to upgrade by eventually not supporting re registration of older products.