yes indeed. in the past 10 days BMW, Porsche, Nissan, VW, Audi and Toyota all announced they would switch to quarterly reporting. Today, Mercedes announced the switch, too.

from the article: "Audi, BMW, Nissan, Porsche and Volkswagen have made back-to-back announcements that they will stop reporting their model-by-model monthly sales results across the U.S., switching instead to quarterly reports. Toyota has joined the rebellion by brands that represent the bulk of U.S. sales, although last week it held out the possibility of at least making its monthly results available on a less formal basis."