4K Channels 1354 & 1355

This is a shot in the dark inquiry...

Those two 4K channels were added for the Super Bowl.  The only content they've ever had is that game and the Westminster Dog Show right around the same time in early February.  They're simply running a Fox Sports loop all the time.  Fox Sports has had plenty of 4K content since then, but none has been shown on those channels. 

So, any idea whether we'll see anything beyond the promo loop?  The same thing happened with the channels added last year for the Players and the Olympics.  The channels stuck around for awhile with no content, then quietly disappeared.