Hi Chunterer.
Thats all I do know for now, I am not sure if it is a set of year by year releases or a compilation of the Group A years. However my source was fairly confident that something will be coming along soon.
If I can find my copies of Autosprout in the attic I will let you know the editions you need for the reviews, then it is well worth trying Collectors Carbooks to see if they have them in stock. I have also tried Autosport back numbers department in the past but they were not very well organised.
Glyn