Board Thread:General Discussion/@comment-5073073-20140920013120/@comment-114.76.24.53-20150114061114

I don't think there's really anything to speculate about. It is incredibly unlikely that a BTD6 will be released and I doubt that an update for BTD5 would include a new Bloon type. I think it's just there for the appearance of the track. It is a MOAB Graveyard, after all.