Bing found the following results
End of support for Cortana - Microsoft Support
WEBCortana in Windows as a standalone app is deprecated. Support for Cortana in Teams mobile, Microsoft Teams display, and Microsoft Teams Rooms will end in the fall of 2023. Voice assistance in Outlook mobile and Microsoft 365 mobile will also end in the fall of 2023, however we will continue to support the Play My Emails feature in Outlook mobile.