Ballistic Advantage (BA) seems to be dropping some hints to see if anyone is paying attention. They frequently host rifle giveaways and their most recent one features a KeyMod rail with the BA logo engraved on it. Another photo also surfaced showing an SBR wearing a Dead Foot Arms MCS folding stock and a shorter version of the same rail (below).
It looks like there could be a Ballistic Advantage rail in the works.
Update: A sharp-eyed follower of JTT on Facbeook, Vincent C, pointed out that this appears to be a Vltor Freedom Rail with BA branding.