The way I understand it is that you get the same dot release upgrades and fixes that you always got when owning an extension... the library subscription differs, though, for say when WebAssist releases a major update. For example, I purchased by Super Suite many eons ago and with it came Digital File Pro 1. With that - as part of the suite package - I got the upgrades such as 1.1, 1.2, etc. But when Digital File 2 was released, I had to buy the upgrade. Whereas now, if I have the subscription - every new WebAssist extension will be available to me upon release. Just like had the subscription model been in place a month back, any of us with a subscription would have had access to CSS Form Builder without having to buy it.