Incorect version is displayed for JDK6 RC at http://jscpreview.sfbay/javase/6/webnotes/install/jdk/install-docs.html (internal website) as follow: jdk-1_6_0-doc.zip

The actual name is jdk-6-rc-doc.zip

The same problem seen for JDK6 Beta2 at http://java.sun.com/javase/6/webnotes/install/jdk/install-docs.html
The actual name is jdk-6-beta2-doc.zip instead of jdk-1_6_0-doc.zip

Note:
It's beter to have a generic name
The doc download file name has been corrected to read
jdk-6-rc-doc.zip