Personally, I think they are preparing for the possibility that DRK triples from here and becomes a serious alternative to LTC.  I doubt they will begin trading the coin until they are confident the network is stable and operational as advertised, meaning July'ish if things go according to plan.  I don't think BFX come in early to lead us up, but if we get just a bit further they might take us over the top to blow past LTC.

It would probably be a very irresponsible business decision to support a coin that hasn't proved itself as a stable third place.  We're getting there but I mean just look at the chart for the last week, we're not there yet.