Following the recent press attention various security vulnerabilities in Java’s browser applet plugin have had in recent weeks (here and here), the latest Java patch from Apple removes the applet plugin from your browsers:
This update uninstalls the Apple-provided Java applet plug-in from all web browsers. To use applets on a web page, click on the region labeled “Missing plug-in” to go download the latest version of the Java applet plug-in from Oracle.
Since Oracle now maintain the official version of Java for Mac OS X, this is a smart move for Apple to remove the older/prior versions that end users may have of the applet plugin that shipped with older JREs previously supplied by Apple.
More details here.