Here's the PAC12 position as of July 31.

Following the Pac-12 CEO Group’s July 10 decision to move to a Conference-only football schedule, the Pac-12 today unveiled a 10-game Conference-only schedule (available below as well as on Pac-12.com) structured to maximize flexibility, including the following features:

Season to commence on September 26 (normally Week 4), with the flexibility if necessary to commence on a later date if the situation warrants;
Each team will play five home and five road games;
Games that are unable to be played on their scheduled date can be made up in their bye weeks or in Week 12 (December 12), with the Pac-12 Football Championship Game, presented by 76®, now slated for December 18 or 19; and
The Pac-12 Football Championship Game, presented by 76®, will be held in a home-hosted model for 2020, with the Pac-12 and partners Allegiant Stadium and the Raiders, Las Vegas Convention & Visitors Authority (LVCVA) and MGM Resorts International agreeing to commence hosting of the Championship Game at Allegiant Stadium in 2021 for its two-year run in Las Vegas in order to ensure a successful launch of the inaugural event.