Conference realignment between the Big 12, Big Ten, and SEC continues to go on after the Pac-12 has chosen to collapse on itself after multiple years of mismanagement. After being handed life preserver after life preserver, they were left with not of a lot good options for their TV contracts.
After it became clear that the Pac-12 could not sustain itself, Oregon and Washington left the Pac-12 for the Big Ten. With Arizona, Arizona St., and Utah also heading for the Big 12, the Pac-12 is all but gone.
The Big 12 might end up being the only other major conference that survives.