https://techcrunch.com/2023/06/05/facetime-voicemail-is-coming-to-ios-17-plus-live-voicemail-transcription/

In iOS 17, Apple is making upgrades to key apps like Messages, FaceTime, Contacts and Phone.

Announced today during WWDC, Apple revealed that users will soon be able to leave video voicemails via FaceTime. This long awaited feature makes the user experience more seamless if you try to FaceTime a friend and they don’t pick up, yet you still want to leave a message. Apple is also adding a feature that will do live transcription while contacts are leaving you voicemails. Similar to existing features on Google devices, the live transcription of the voicemail will appear on your home screen, and if you decide you want to pick up in the middle of the voicemail, you can.