Had a pair of items to follow up on. The Big 12 provided the following responses.
1) ABC will continue to have a six appearance limit for their portion of the package, including any games on ESPN, until 2016. At that point the appearance limits in all packages go away. Makes sense when you consider that the Big 12 is no longer a conference that divides its television revenue by appearances on a particular network
2) Network exclusivity no longer exists. Any FOX network, cable or broadcast, can air at the same time as a game on ABC & the ESPN Networks