Hi all,
Due to a change in circumstances, I was suddenly able to consider a RTW for next year. Having checked Expertflyer every day this week (in addition to this excellent thread, of course - thank you all!), QR still had not withdrawn their prices this morning. I gave their London Customer Service a call this morning, and made a booking (DONE4), starting CAI-DOH. The rep was a bit unsure of what to do and put me on hold a couple of times to ask for advice.
Now I am just waiting for them to get back to me. I rate my chances as certainly not higher than 50%