Intrepid sleuths at XDA-Developers have uncovered code in the latest Google App, buld 10.93, that may be part of a new feature to improve the apps pronunciation abilties when it comes to proper names. Right now if your name is hard for Google to pronounce, your best option is to find the Nickname settings and enter a more transliteral spelling that forces Google to say it the way you prefer. Quite inelegent.
The new feature gives you the option to “record your own” pronunciation. It is unclear what happens then, once Google has a recording. At best there will be some sort of AI methodology to analyze the way you pronounce the name, then transpose your pronunciation onto the Assistant’s voice. At worst it may just play the recording of you reading your own name, but that seems unlikely.