is not an official 2021 release in the traditional sense. Instead, it is a specific compiled build (likely from late 2020 or early 2021) that became widely distributed throughout 2021. Many consider it the "final polished version" before the developers pivoted to "Phoenix OS 2.0" (a completely different interface) or abandoned the x86 project in favor of the Phoenix OS "Roaming" edition.
Unlike standard Android, Phoenix OS features a Start Menu , a taskbar, and a file manager that supports drag-and-drop operations, similar to Windows 7 or 10. phoenix os v361564 2021
Once booted, Phoenix OS greets you with a setup wizard reminiscent of Windows 10: is not an official 2021 release in the traditional sense