Here's the link to DMV Highlights New Laws in 2023: https://www.dmv.ca.gov/portal/news-and-media/dmv-highlights-new-laws-in-2023/
The Legislature of California passing the Assembly Bill 984 on September 29, 2022, now allows for the product License Plate Wrap to be an alternative to the conventional metal plates issued by the DMV.
Link about the AB-984
Bill Text - AB-984 Vehicle identification and registration: alternative devices.