New subchannel 7.4 in DC, looks like providied by the Sinclair group, so I'm guessing it's on or launching elsewhere?

http://variety.com/2016/tv/news/sinclair-broadcast-group-tbd-digital-channel-1201938056/

http://tbd.com/

Looks like it's catering to a younger crowd, with content from a pay channel called QYOU.