From the latest IPMS UK Scale Model World 2014 News update;
http://smwshow.com/news.php
"Whilst we are on the subject of traders, Airfix will be announcing a large new model at 11:00 on Saturday at the SMW 2914, I am lead to believe that it will be in 1/24 scale."
Hopefully it is a completely new tool kit and not a re-issue "New for 2015", given how misleading and vague the Airfix marketing has been recently describing re-issues as "brand new" etc.
Another couple of possibilities are a re-issue of the 1/24 Mosquito as a bomber, and possibly the 1/24 Typhoon with a car door.
Unquote
Exciting news.
Cheers
Cees