If you are curious about the upcoming news in Safari, you can download a new version of the Safari Technology Preview from Apple’s website.
The focus in version 161 is on the usual bug and security fixes. In addition, there is said to be improved performance for Javascript and Webassembly.
The primary purpose of the Safari Technology Preview is to give developers early access to new features, but anyone can download the browser freely. The system requirement is Mac OS Monterey or Mac OS Ventura, so if you’re running an older system, you’ll need to upgrade your computer first.