I think all the cable companies "plan" to carry it, but getting a deal done is the issue that is there.
For carriers like Dish, whose carriage agreement with ESPN was up, they rolled the SEC Network into an overall extension to carry all of ESPN's channels.
It's more complicated for carriers that are at the beginning or the middle of deals with ESPN.
Comcast re-upped a couple of years ago, but that deal included some framework for adding a future SEC Network. I think that deal gets done shortly, partly to avoid looking bad while going through a merger with Time Warner Cable. TWC is near the end of their deal with ESPN, so I think Comcast will look to re-do their whole deal to get this done for their current and future customers.
Direct TV was ready for a big fight, but now they're merging with ATT, who was the first provider to sign on with the network, so that will likely work itself out, especially if that merger closes sooner rather than later.
As far as Charter, they are HEAVY in Alabama, especially around Birmingham, Tuscaloosa and Auburn. I think you can count on that deal getting done, because I think we all know the kinds of things Alabama fans do to things and people that interfere with their ability to watch Tide games. If they don't have the network by the opening weekend, you'll see riots down there.
The biggest thing that is holding up these deals is the Longhorn Network. It's no secret in the industry that ESPN is forcing cable companies to add LHN when they add the SEC Network. Most carriers are fully on board with the full asking price for the SEC Network, but they're arguing pennies over having to carry LHN, which has zero interest outside of Texas.