The CZ has also discontinued piping the CA RR Museum docents' commentary between Sacramento and Reno over the PA into the sleepers and coaches. On my last couple trips (Feb 2013), the first docent made an announcement for all to hear at the start of the journey segment that there would be a commentary, and those wishing to hear it should move to the SSL car. Then, the second docent made another all-cars announcement near the end with the standard plug for the CA RR Museum.
I found this personally to be a welcome change, since I had probably heard the full spiel at least 20 times by then riding in either coaches or sleepers.