The prototype I'm currently working on is for A1200 and A4000T.
I've had a special version of the old model for A4000D and CD32, but that sold extremely slowly. I may or may not make such a special version again, because it's fairly risky to bind capital in such a slow-selling field.
I may make a "special order period" where anyone interested in an A4000D/CD32 version can pre-order and pre-pay his unit, but I will most probably not stock them. Based on the numbers of the old model, I'm expecting higher cost than for the A1200/A4000T version.