Asus has announced the Android 13 beta program for the Zenfone 9 launched last month with Android 12.
Those interested can apply for the beta program by navigating to their Zenfone 9’s Settings > System > System update menu, clicking on the gear icon in the top-right corner, and then clicking on « Enroll in the Beta Test Program. » After that, click on « Agree », sign up for the Asus member account if you don’t have one already, fill in the beta test application, and click « Submit. »
If your application is accepted, you will be informed via email and receive the Android 13 beta on your…
https://www.gsmarena.com/asus_zenfone_9_android_13_beta_program-news-55548.php