As noted by MacRumors, Apple on Thursday released the first Rapid Security Response update for the macOS Ventura 13.2 beta. The new feature, also being tested in iOS 16, allows users to apply small security fixes to their devices without requiring a full-blown update.
macOS Rapid Security Response 13.2 (a) is applied to the Mac automatically upon restart, and it is also added to Safari when the Safari app is exited and then reopened.
Apple has previously released iOS 16 Rapid Security Responses, but only in a test capacity. Apple now appears to be testing the feature on Mac before real Rapid Security Response updates begin rolling out to Mac users.