Check out some of #accessibility features the team has been working on this year including Live Speech, Personal Voice and Point and Speak in Magnifier. https://www.apple.com/newsroom/2023/05/apple-previews-live-speech-personal-voice-and-more-new-accessibility-features/
Apple introduces new features for cognitive accessibility, along with Live Speech, Personal Voice, and Point and Speak in Magnifier

Apple today previewed software features for cognitive, vision, hearing, and mobility accessibility, along with innovative tools for individuals who are nonspeaking or at risk of losing their ability to speak.

Apple Newsroom
@dcm I'm extremely excited to see what personal voice will be like. I've always found it interesting to be able to create a synthesized version of my voice.
@BTyson @dcm The problem with the personal voice, is that it will only be usable in TTY calls for now.
@dcm @kevinrj Is it not something we'll be able to use with VoiceOver?
@kevinrj @dcm The article doesn't specifically say that it will be usable only in calls.