Website:
http://java.sun.com/javase/downloads/index.jsp

Too many updates to list, see here.

Release notes: (see for updates)
http://java.sun.com/javase/6/webnotes/6u10.html

Test your version of Java:
http://javatester.org/version.html
"...Note: When installing a new version of the product from a source other than a Solaris patch, it is recommended that the old affected versions be removed from your system. To remove old affected versions on the Windows platform."
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JavaRa detects 6u10 as new and will now remove 6u7 when run.