Apple Releases Safari Technology Preview 91 With Legacy TLS 1.0 and 1.1 Disabled - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Releases Safari Technology Preview 91 With Legacy TLS 1.0 and 1.1 Disabled

by

safaripreviewiconApple today released a new update for Safari Technology Preview, the experimental browser Apple first introduced three years ago in March 2016. Apple designed the ‌Safari Technology Preview‌ to test features that may be introduced into future release versions of Safari.

‌Safari Technology Preview‌ release 91 includes bug fixes and performance improvements for Javascript API, JavaScript Performance, Media, Web API, Rendering, Pointer Events, WebDriver, Web Inspector, and WebGPU.

Today's ‌Safari Technology Preview‌ update disables TLS 1.0 and TLS 1.1. Apple in October 2018 said that it plans to end support for TLS 1.0 and 1.1 in March 2020, and has recommended that apps adopt TLS 1.2 instead.

TLS 1.2 is the standard on Apple platforms, and according to Apple, represents 99.6 percent of connections made from Safari. TLS 1.0 and 1.1 account for less than 0.36 percent of connections.

The new ‌Safari Technology Preview‌ update is available for both macOS Mojave and MacOS Catalina, the newest version of the Mac operating system that was introduced at the June Worldwide Developers Conference.

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.

Top Rated Comments

Frantisekj Avatar
87 months ago
What about to explain what TLS is if you mention it?
Score: 1 Votes (Like | Disagree)
ehrens Avatar
87 months ago
"Release" is the correct terminology. STP is basically Apple's answer to Chromium, a way to experience fast deployment of web tech in a feature complete shell, since Safari only pushes ahead in versions every year or so. And since it's a public download rather than a closed/structured beta, the "seed" moniker would not fit.
Score: 1 Votes (Like | Disagree)

Popular Stories

Safari Technology Preview Updated Feature 1

Apple Releases Safari Technology Preview 241 With Bug Fixes and Performance Improvements

Wednesday April 8, 2026 3:05 pm PDT by
Apple today released a new update for Safari Technology Preview, the experimental browser that was first introduced in March 2016 and just marked its tenth anniversary. Apple designed Safari Technology Preview to allow users to test features that are planned for future release versions of the Safari browser. Safari Technology Preview 241 includes fixes and updates for Accessibility,...
iOS 27 on iPhone 17 1

iOS 27 Will Add These New Features to Your iPhone

Saturday May 2, 2026 8:43 am PDT by
Apple is expected to unveil iOS 27 during its WWDC 2026 keynote on June 8, and there are already many rumored features and changes for iPhones. The first developer beta of iOS 27 will likely be available immediately following the keynote, and a public beta typically follows in July. Following beta testing, the software update should be released to all users with a compatible iPhone in...
Apple MacBook Pro M4 hero

Why You Might Want to Wait to Buy a MacBook Pro

Friday May 1, 2026 3:43 pm PDT by
Apple refreshed the 14-inch and 16-inch MacBook Pro with M5 Pro and M5 Max models in March 2026, but depending on your needs and interests, you might want to skip this generation because there's something better in the works. The M5 Pro and M5 Max MacBook Pro models have faster chips, but the same design that Apple has used since 2021. An updated design with new display technology and faster ...
Related Apple News: Motoring | Local News | Sport | Politics | Iphone