ninja: Yes, I know about the A3000. In fact, you're mistaken about the A300 series: those machines also had the owl and the nominal BBC link (top-right of the keyboard, where it said 'Acorn' on the A400 series).
It's true that those machines were still linked with the BBC and officially recognised as the successors to the previous generation of 8-bit BBC Micros (and, of course, came with the 65Host and 65Tube software to allow them to run more BBC software than BBC Basic would allow on its own). So I agree that Dr Blyth's book should certainly acknowledge them.
However, my point is that the BBC Computer Literacy Project as such was really over by then. The good relationship that had been established between the BBC and Acorn allowed the tie-in to continue into Acorn's next generation of machines, probably in acknowledgement that they were the logical successors and capable of a high level of compatibility with existing BBC computers. But the Computer Literacy Project had run its course before the 32-bit range arrived. In terms of looking at the story from the Acorn perspective, clearly the launch of the 32-bit range was massively important and the ability to continue to use the BBC name on the new machines, for a few years at least, would have been very valuable to Acorn in terms of helping its users to make the transition from the 8-bit generation to the new 32-bit one.
But from the opposite perspective, that of the BBC Computer Literacy Project (which is what Dr Blyth's book is about), all the interesting stuff happened long before then, and it was all pretty much over by 1987, so there's not a lot of reason for the 32-bit machines to be much more than an appendix to the meat of the story. Of course, they are very important in terms of the lasting ramifications of the Computer Literacy Project, and I don't know to what extent her book will consider those. But the Computer Literacy Project was all about teaching people about computers in general, not tying them to the Acorn platform. The undoubted success of the project didn't actually do all that much long-term good for Acorn's 32-bit platform, sadly, as we all know. It would have been a major factor contributing to the use of Archimedes machines in schools, but it certainly didn't get them into private homes in the way that it had done with the earlier (and much cheaper) 8-bit BBC Micros. The world had moved on by the late 80s, and there were lots of cheaper machines with better games to attract the kids.
NB I should make clear that I don't know anything about the contents of Dr Blyth's book. She may want to discuss the 32-bit legacy in some detail; who knows? All I can say for certain is that it's a book about the Computer Literacy Project rather than a book about Acorn, so I'd fully expect it to concentrate on the 8-bit micros and what happened in the early to mid-1980s rather than anything later than that.