I doubt it will be worth their while until there are at least 100,000 of any model on the road and out of warranty. Even so the DIY motorist is becoming scarce with the increasing complexity of cars. In my day it was a case of fix it yourself or walk, and it usually involved a hammer and screwdriver, with a service required every three to five thousand miles with fettling in between. I have changed big end shells laying in a gutter, and done cylinder head off decoke and valve grinds in the open air. never again, so Haynes manual not required. This is probably why they have diversified into other areas of publishing.Several cars ago I called at their HQ to ask why there was no manual for my then car. Was given a request card to fill in and was told that they do respond to requests from the public if there is sufficient demand. ie. the issue is in our hands if we are prepared to "badger" them.