It has taken Google a bit of time to roll out Android 12. But the end (or the beginning rather) might be in sight. XDA editor-in-chief Mishaal Rahman claims Google plans to release the Android Open Source Project (AOSP) version of the operating system on October 4. The company usually releases the polished version of its mobile OS simultaneously as AOSP, so we might see it roll out to Pixel users on the same day.
As Engadget noted, this could also set expectations for the Pixel 6 launch. It won't make sense for the company to launch its next flagship before its latest OS launches.