That is up to the owners of the shows for if, or when, Comcast can show them.
That show airs on Tuesday nights. Last Tuesday was the air date for the season finale and I checked on my phone and it did air, but it is not showing up on the list of available episodes. That is not the only show that is being affected either. They dropped Starz from my channel lineup and gave me Epix in it's place, but episodes of Belgravia that have already aired are not available on ON DEMAND either. Lots of customers are complaining about this issue. Some have been getting error codes which I'm not. I just can't get the new episodes.