This timeline is relatively significant as Google is expected to release the stable build of Android 12 for Pixel phones this month, meaning that the beta is coming along a bit quicker than usual. Last year, the One UI 3.0 public beta was released a month after the stable version of Android 11, while the first official update rolled out in November.
The forum post indicates that the upcoming beta will be public, as it puts out a call for members to participate. According to the poster, the build will work on both carrier-locked and unlocked devices, with the Galaxy S21, S21+, and S21 Ultra getting first dibs. There are already some signs that Samsung is gearing up for the public beta programme, such as the latest One Hand Operation+ app update which brings support for Android 12. Google launched Android 12 back in May, with beta updates being released every month. The OS update is a big visual overhaul, with Material You at the centre of the design change. The UI focuses on personalisation elements, such as using AI to customise the phone’s entire theme based on your wallpaper. When the public beta launched, Google revealed that several non-Pixel phones were also eligible for participation, including devices from OnePlus, Xiaomi, OPPO, ASUS, and several others. (Source: 9to5google, SamMobile)