Apple has just dropped the first seed of Safari 7.0.3 for Mavericks and 6.1.3 for Mountain Lion to developers. The company is asking them to focus on Push Notifications, Autofill, and more.
– General website compatibility
– Safari Push Notifications
– Login AutoFill
– Credit Card AutoFill (OS X Mavericks only)
– Extension Compatibility
The betas are available via the Update tab in the Mac App Store, and via download from the Mac Developer Center.