Now that APL V6 has been released, can someone bring us up to date the current state of completeness for the []MOM facility?

Working on large projects for me is impossible with the current APL (without namespaces).  There are just too many fns and vars to keep track of.  []MOM promises to reduce the number of names.  That (for me) is absolutely essential.

I realize that []MOM is a work in progress.  I know it is not completely implemented.  Since there is no documentation that I can access(that I know of), I'm hoping that someone can simply tell me whether functions can be added ([]FX?) at the present time.