According to the coverage map here: https://www.radioreference.com/apps/db/?siteId=16701 I should be able to receive them as well here in Chandler, but I never hear a peep. Mesa FD on the other hand comes in loud and clear.
I'm not sure there is a public timeline. They still have some infrastructure work to do before they get there. I don't think there is a big push since the FCC moved their deadline.