Safari 5 released with Safari Reader, Extension and greater HTML 5 support
Apple released Safari 5, featuring the new Safari Reader for reading articles on the web without distraction, a 30 percent performance increase over Safari 4, and the ability to choose Google, Yahoo! or Bing as the search service powering Safari’s search field. Available for both Mac® and Windows, Safari 5 includes improved developer tools and supports more than a dozen new HTML5 technologies that allow web developers to create rich, dynamic websites. With Safari 5, developers can now create secure Safari Extensions to customize and enhance the browsing experience.
Similar to Firefox Add-on, Safari Extensions support lets users build add-ons with HTML5, CSS3 and JavaScript, and Apple is also releasing and Extension Builder Kit designed to help with building Safari Extensions.
Safari 5 adds more than a dozen powerful HTML5 features that allow web developers to create media-rich experiences, including full screen playback and closed captions for HTML5 video. Other new HTML5 features in Safari 5 include HTML5 Geolocation, HTML5 sectioning elements, HTML5 draggable attribute, HTML5 forms validation, HTML5 Ruby, HTML5 AJAX History, EventSource and WebSocket.
Safari 5 also includes fixes to 48 security issues. (For Mac OS X 10.4, Safari 4.1 is available for same fixes.
Safari 5 is available from Apple Software Update or from Apple's Safari page. Safari 5 for Mac OS X requires Mac OS X Leopard 10.5.8 or Mac OS X Snow Leopard® 10.6.2 or later. Safari 5 for Windows requires Windows XP SP2, Windows Vista or Windows 7, a minimum 256MB of memory and a system with at least a 500 MHz Intel Pentium processor.