Apple today released Security Update 2007-006 which is recommended for all users and improves the security of the WebKit component.
Security Update 2007-006 is available via Software Update and also as standalone installers.
More info and download links:
• Security Update 2007-006 (Universal) – 4.5MB
• Security Update 2007-006 (PPC) – 2.7MB
• Security Update 2007-006 (10.3.9) – 2.2MB
About Security Update 2007-006: http://docs.info.apple.com/article.html?artnum=305759
MacDailyNews Note: Security Update 2007-006 includes the same WebCore and WebKit fixes that are in Safari Public Beta 3.0.2 and vice versa.