MediaTek is currently believed to unveil an SoC based on an industry-leading 4 nanometer (nm) architecture in 2022. This would mean the OEM would skip the current top-end 5nm standard in the process. Now, the latest leak claims that it is destined for the Taiwanese chip-maker's sub-premium range next year instead.
https://www.notebookcheck.net/MediaTek-s-mid-range-chipsets-will-upgrade-to-5nm-in-2022.560674.0.html