The Asus ROG Phone has arguably been the benchmark for Android gaming-focused powerhouses since the debut of its series in 2018. Therefore, it will see its fourth generation in 2021. Despite this, the OEM has confirmed rumors that it will be called the 5 rather than the 4.
https://www.notebookcheck.net/It-s-official-the-next-Asus-ROG-Phone-is-the-5.522770.0.html