https://wccftech.com/direct-download-windows-10-iso-files-for-version-20h2-32-bit-64-bit/

Windows 10 October 2020 Update is live! After several months of Insider testing, the October 2020 Update, version 20H2, is going live for the public. Like the previous versions, this would be a phased out rollout, meaning not everyone would get it at the same time. However, through the ISO files, you can force and clean install Windows 10 version 20H2 on your devices without waiting for the official notification.

We had already shared with you the steps to install October 2020 Update ahead of the pack, but now that the official Windows 10 ISO files are out, you don't have to go through any tedious processes.