They already said in the PPaint thread... if those communities get some bounty money together they may consider a port to AROS or MorphOS.
Without, it's 68k and OS4 they're developing for.
If so, they should not tempt us with "possible MorphOS and AROS versions". If they want a bounty or a pre-order system (I prefer the latter. Then we don't have to pay double for the products) then they should just make it happen and watch the money rolling in.
Add a "preorder for MorphOS" and "preorder for AROS (x86 and x64)" on your homepage, with a counter telling how many orders left that is needed and withdraw the money once it reaches zero.
Waiting for the community to figure out how to make money for you is kinda lazy :p