Google releases Android 13 QPR3 Beta 2.1 for eligible Pixel models
Under the image of your Pixel, you’ll see a box that says “Opt-in.” Tap it and you’ll be sent the latest Beta update (go to Settings > System > System update). You’ll have to stay in the program until the June Pixel Feature Drop is released (which should take place on June 5th). If you are a member of the QPR3 Beta program, until the QPR3 public version is installed on your phone, exiting the program will force you to wipe the data off of your device.
If you are a member of the QPR3 Beta program and want to complain about the lack of the April security update or anything else that crosses your mind, you can go to Settings > Tips & Support > Send feedback and lodge your complaint.