Apple Releases Safari Technology Preview 47 With Spectre Mitigations - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Releases Safari Technology Preview 47 With Spectre Mitigations

by

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

Safari Technology Preview release 47 includes bug fixes and feature improvements with an experimental implementation of the Storage Access API, updates to Service Workers, and improvements to Media, Rendering, Web Inspector, and the Clipboard API.

Today's update also includes mitigations for the Spectre hardware vulnerability that impacts Apple's Macs. Spectre fixes were previously added to the release version of Safari with yesterday's release of a supplemental update macOS High Sierra 10.13.2.

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

Wildkraut Avatar
112 months ago
I’m not going to free test software for Apple anymore. Bugs are mainly reported as duplicated and ignored anyway. My life time is too short and precious to waste playing the good samaritan for a multi billion dollar company. They shall simply pay us for testing, or simply employ more internal testing staff.
Score: 3 Votes (Like | Disagree)
112 months ago
What is this?
He's making a joke about the Volkswagen emissions scandal. :)
Score: 1 Votes (Like | Disagree)
112 months ago
What is this?
I was just being a smartass - it was an oblique reference to the VW diesel-gate scandal where the software in the car could detect when it was being tested for emissions and then reported back results that were better than reality.
Score: 1 Votes (Like | Disagree)
112 months ago
Now it says 467 out of 555 for me, and I haven't changed any settings :confused:
You must have the VW plug-in installed ;-)
Score: 1 Votes (Like | Disagree)

Popular Stories

Safari Technology Preview Updated Feature 1

Apple Releases Safari Technology Preview 248 With Bug Fixes and Performance Improvements

Wednesday July 22, 2026 11:25 am PDT by
Apple today released a new update for Safari Technology Preview, the experimental browser that was first introduced in March 2016. 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 248 includes fixes and updates for Accessibility, CSS, Editing, Forms, Images, JavaScript,...
Apple Event Logo

Apple Working on All-New Operating System

Wednesday July 29, 2026 11:39 am PDT by
Apple is developing an all-new operating system that is essentially a mix of tvOS, watchOS, and iOS, according to Bloomberg's Mark Gurman. In a report this week, he said the operating system will feature a grid of icons, widgets, and apps, along with customizable clock faces. The new software platform is intended for Apple's long-rumored smart home hub. With built-in facial recognition,...
imac video apple feature

Apple Made Its Second-Biggest Acquisition Ever This Year

Wednesday July 29, 2026 12:03 pm PDT by
Apple this year acquired Israeli startup Q.ai for close to $2 billion, according to the Financial Times. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone maker Beats in 2014. This is also the largest known Apple acquisition since the company purchased Intel's smartphone modem business and patents for $1 billion in 2019. Q.ai...

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors