Release Notes for Safari Technology Preview 38Safari Technology Preview Release 38 is now available for download for macOS Sierra and betas of macOS High Sierra. If you already have Safari Technology Preview installed, you can update from the Mac App Store’s Updates tab. This release covers WebKit revisions 220128-220795. Beacon API Enabled the Beacon API by default as an experimental feature (r220553) Added support for CORS-preflighting (r22
