Hi Sabino! Great to see you back!
As David pointed out, the subscription will get you one year of use of A:M. Iit will let you run any of the versions from v15 through v19.5
Unlike the old CD versions, your subscription is locked to the computer you activate it on.
Here is a list of new features in recent versions.
I believe v15 did have a CD version but the copy-protection scheme that worked by putting a CD into the drive no longer works on Windows 7 and later.