Google Mobile First Indexing Notices Are Delayed Within Search Console

Google's John Mueller said on Twitter that there is a delay currently with the notices that go out after a site has switched over the Google Mobile First Indexing. John said "We're a bit behind with messaging of the mobile-first indexing because we're switching to a model that reduces the number of messages owners of many sites get (currently in test, should be catching up in the next weeks, assuming all goes well :))."