I have a gut feeling that a lot of the moves are being done to make room for 24/7 HD RSN's.
I haven't heard anything but thats what my gut is telling me.
I really hope you're right because as we all know watching a game in SD on a HDtv blows big-time. However, unless Quatto (from Total Recall) pops out of your gut to confirm this, I'm going to have to see it to believe it.