Theory I thought of today-
I am starting to wonder if the reason we aren't seeing any new HBO/MAX channels is because DirecTV and TW cannot work out a deal on the On Demand. Just about EVERY channel is available On Demand in the 1000's now on DirecTV. Mysteriously, HBO and Cinemax On Demand are missing. Cable has had HBO and Cinemax On Demand for years. I'll bet there is some type of dispute over the On Demand and it goes along with adding the HD channels.
Come on DirecTV and TW, let's work out a deal and add the HD channels, and the On Demand.
I came up with this today while looking at the new Access magazine. They have a nice big ad highlighting the Showtime HD channels recently added, along with the On Demand. Just makes me wonder. Maybe TW is playing hardball, but if that is the case, why haven't we seen other non-TW adds? Just another thought.