The problem with your thinking is these features have nothing to do with the "flash" itself. These are optional features available in the SOFTWARE. Software is constantly updated after the "product" is released. The website is not an all inclusive list. And these features again are optional. So you don't "reflash" the ECU and everything is available. You have to select which features you want and then flash it. You reflash it again if you want updates or changing things.
So you should be looking at the software features and updates for versions and not at the product list. The product itself is just to interface to the ECU and give you the capability to change things within it. That list was initially created back years ago when it was released and they work more on the software than the website to keep it updated.