Apple、「Safari 10 for Yosemite and El Capitan」を開発者に公開！

Appleが、「Safari 10 for Yosemite and El Capitan」（Build：11602.1.32.7）を開発者に公開しています。

macOS SierraのSafariに新搭載される「Apple Pay on the web」や「Picture in Picture」は利用できません。
「Safari 10 for Yosemite and El Capitan」の新機能や改善点は以下の通りです。

OS X El Capitan
• Safari Extensions
• Development of Safari App Extensions
• New Bookmarks sidebar, including double-click to focus in on a folder
• Redesigned Bookmarks and History views
• Site-specific zoom
• Improved AutoFill from your Contacts card
• Reader improvements
• HTML5 and legacy Plug-ins
• Allow reopening of recently closed tabs
• Spotlight suggestions for Top Hits
• Back closing spawned tabs
• Improved ranking of Frequently Visited Sites
• Web Inspector Timelines Tab
• Debugging using Web Inspector
OS X Yosemite
• Safari Extensions
• New Bookmarks sidebar, including double-click to focus in on a folder
• Redesigned Bookmarks and History views
• Site-specific zoom
• Improved AutoFill from your Contacts card
• Reader improvements
• HTML5 and legacy Plug-ins
• Allow reopening of recently closed tabs
• Back closing spawned tabs
• Improved ranking of Frequently Visited Sites
• Web Inspector Timelines Tab
• Debugging using Web Inspector