When Cyan builds a new version of MOULa, they rebuild all the ages. Cyan's build machine uses Max 7. To build an age, you need the Max file. Max 7 can't read Max files created by anything beyond Max 7.
Andy's doing secret stuff which he dropped a few hints about recently over at the GoMa forum about fan content etc. But the long and the short of it - yeah, fan content. Pretty soon.