First, are you talking about the OSS drivers or fglrx? You seem to be merging the 2 together in your complaint.
fglrx will come with support at release, at the same time the windows drivers are released. just like evergreen did.
for the OSS drivers, they've actually started working on support now, rather than waiting until long after it's released, so i would expect support of some minimal level to come quicker, not slower. And changing tesselation design is the last thing that would affect the driver, since it's nowhere close to even supporting that feature yet. As far as the design completely changing how the driver works, where's your source? I doubt anyone outside of ATI really knows this for a fact, and think you're making shit up, but if you can provide a good source i'll believe you.