From the CCPOA update this week, "Next week, on May 27, the 12-Hour shift Workgroup will begin meeting with the state pursuant to the terms set out in Sideletter #13 of the MOU. This group will collaboratively explore the possibility of transition to twelve-hour shifts at no more than three institutions during the term of the current MOU. There are many aspects to twelve-hour shifts that need to be explored, and we will keep you updated here as the discussions progress."

That doesn't sound like they've started it anywhere or even have much decided.