To be honest, I doubt it would be available in the rooms anytime soon. The Big 10 network has been around a few years, and I've never noticed it in the rooms. The SEC network (Channel 611 on DirecTV) is obviously more local at WDW than Big 10, but it's still one of those "niche" channels in the 600's on DirecTV, rather than in the 200's, like more major ESPN and other network channels.
I wouldn't be surprised if it's available in some of the resort bars, etc., though.
But since it just started 5 days ago, and there's not been a major SEC game of any kind in that time, I'm not sure anyone will have checked for it just yet.