Safari Technology Preview contains the most recent additions and improvements to WebKit and the latest advances in Safari web technologies. And once installed, you will receive notifications of updates from the Mac App Store.
Shared Links Extensibility. Use the new Shared Links API extension to add link suggestions to the shared links feed on Safari for OS X and iOS.
Content Blocking API for Safari extensions. Easily block content from a large collection of webpage resources with minimal overhead and incredibly high performance.
Force Touch Trackpad Mouse Events. Create interactivity like never before using new events and force information from the Force Touch Trackpad.
CSS Scroll Snapping. Use CSS scroll snapping to keep the focal point of your content in view when scrolling momentum stops.
FairPlay Streaming. Stream premium web video content securely with FairPlay Streaming support in Safari on OS X.