Added the latestSupportedTlsVersion property to the subscription entity. Specifies the latest TLS version that the notification endpoint supports. Allows subscribers to use a deprecated version of TLS for a limited period. For details, see Microsoft Graph subscriptions - deprecating TLS 1.0 and 1.1.
This passage mentions retirement or schedule guidance. Use the dates and replacement guidance in Microsoft's text; this label does not choose between old and revised dates.