Thanks to TEXANTOMCAT for the answer to my question; putting two and two together, a new Jaguar seems likely
I think a Halifax in 1/48 scale is a possibility since there is one close by that can be scanned. It may or may not have sales potential outside the UK, but it seems to me just as feasible as a Javelin or a Sea Vixen and, in my opinion, just as eccentric.
Also, it must be about time for another 1/72 type to replace something from the old range and my guess is that with all the data for the 1/24 version, a Hellcat might be a good bet.
Three aircraft would be in line with previous year's releases.
Maybe we shall find out on Saturday, if Airfix have an announcement at Telford.