I don't think it's unthinkable that CaCF will be improved for 07.
Perhaps, as rumoured, Alton Towers did run out of time when finishing the ride, and rushed to get it open by the day that they'd advertised that it would be open. So maybe they had more bits that are ready to be added to the ride, and rather than closing the ride mid-season, they decided to wait until the closed season to finish it off. Or maybe Alton Towers realise that the ride leaves a lot to be desired, so will invest extra money to get it right.
They did make a few small improvements to the ride throughout the year, so that clearly demonstrates recognition on AT's part that the ride is flawed and that a bit more time and money spent on it could improve it. So maybe they will add a few more bits.
I think it would be unrealistic to expect anything really significant to be changed / added though.
EXIT THROUGH THE SHIPPING CONTAINER