Safari Technology Preview release 84 includes new Safari 13 features that will be available in macOS Catalina. These features include a new Favorites page and prompts to change a password when a weak password is detected.
Refreshed Favorites Design. The Favorites page has been visually refreshed, and now includes Show More and Show Less actions.The new Safari Technology Preview update is available for both macOS High Sierra and macOS Mojave, the newest publicly available version of the Mac operating system that was in September 2018.
Switch to Tab from Smart Search Field. The Smart Search Field now offers switching to an already-open tab when a search query matches the title or URL of an open tab.
Warnings for Weak Passwords. When signing into a website with a weak password, Safari will prompt you to visit the website in a new tab to upgrade the password to an Automatic Strong Password. Safari uses the well-known URL for changing passwords (/.well-known/change-password), allowing websites to take users directly to their change password pages. The password list in Safari Preferences has also been updated to flag weak passwords.
The Safari Technology Preview update is available through the Software Update mechanism in the Mac App Store to anyone who has downloaded the browser. Full release notes for the update are available on the Safari Technology Preview website.
Apple’s aim with Safari Technology Preview is to gather feedback from developers and users on its browser development process. Safari Technology Preview can run side-by-side with the existing Safari browser and while designed for developers, it does not require a developer account to download.