With it being experimental, I can see three possible states:
1) It's been shelved entirely for whatever reason. (That could be permanent, or temporary for any number of reasons).
2) Like the Dark Melee changes in the Page 5 beta, it might have turned out not be low hanging fruit and has been set on the back burner for the moment.
3) Since it's part of a larger effort to revitalize low level play, it might be delayed while the rest of that effort is worked out.