Not sure what the plan for the regionals is. This is from the Pac12 site:
"Customers who get Pac-12 Networks on DISH will receive the national network. The regional networks will not be available on television, but DISH and Pac-12 Networks are working to make them available online via Pac-12 Now."
However, this is from the announcement:
"The games available to DISH subscribers today include:
• Sacramento State at Colorado, 12:00 p.m. PT, Ch. 445
• Eastern Washington at Washington State, 12:00 p.m. PT, Ch. 446
• Southern Utah at California, 12:00 p.m. PT, Ch. 413
• Fresno State at No. 4 Oregon, 3:30 p.m. PT, Ch. 413
• No. 18 Oklahoma State at Arizona, 7:30 p.m. PT, Ch. 413
• Duke at No. 25 Stanford, 7:30 p.m. PT, Ch. 445"
It looks like they are going to use overflow to show all the games.