Apple has released the latest version of Safari for OS X, which for Mavericks brings several changes to the Web browser software. Along with security and bug fixes, the update now includes options to customize push notifications, and support for more custom top-level domains. In addition, Safari 6.1.3 is available for prior versions of OS X.
Push notifications allow Web sites to send notices through Safari, which they should prompt you for; however, if you have many of these enabled, then you may get flooded with notices. Safari 7.0.3 now has a box in its preferences titled “Allow websites to ask for permission to send push notifications,” which if unchecked, will block this behavior.
In addition to push notice options, Safari now has support for new top-level domains which are becoming more popular. These are the .com, .biz, .net and .info endings to URLs, which have now have a number of content-specific alternatives like .aero, .house, .jobs, .coffee, etc. These options will now be properly resolved to URLs, instead of being searched for in Safari’s default search engine.
Safari 6.1.3 only includes bug and security fixes, and no new notification features.
The update should be available through Apple’s Software Update service, which you can access by going to the Apple menu and choosing Software Update.