No. If anything it should just be free DLC.
What DLC is?
RTB is already free downloadable content. Every add-on is.
Pretty sure they mean having RTB downloadable from steam with the purple "DLC" tag on it.
This is a terrible idea. RTB does not even work for some users(like me).
the solution is to make it work
I've talked to Elphialtes about it. It's something about too many TCP objects for my somewhat outdated Mac.