According to MacRumors, Apple today released the latest update 122 of the Safari Technology Preview, which is an experimental browser that Apple first launched in March 2016. Apple designed the Safari Technology Preview to test features that may be introduced in future versions of Safari.
The current Safari technology preview version is based on the built-in Safari 14 in macOS Big Sur. It supports Safari web extensions imported from other browsers, tag previews, password leak notifications, network authentication using Touch ID, and more. The new Safari technology preview is available on macOS Catalina and macOS Big Sur.
The Safari Technology Preview update can be provided to any user who has downloaded the browser through the “software update” mechanism in the system preferences. The full release notes for this update are available on the Safari Technology Preview website.
The purpose of Apple’s Safari technology preview is to collect feedback from developers and users on its browser, especially for new features under development. The Safari technology preview version can run simultaneously with the existing Safari browser. Although it is designed for developers, it can be downloaded and used without a developer account.