In the public JDK 6 RC, the bundled applets.html page refer to the information on compatibility with Previous Releases as

http://java.sun.com/javase/6/compatibility.html

which is an invalid "Page Not Found"

This link needs to be fixed for Mustang GA. It is important information.
bad link has been fixed with redirect
JDK: 6u5 b13

Test Bundle: downloaded and installed jdk-6u5-solaris-sparc.tar.Z (32bit) and jdk-6u5-solaris-sparcv9.tar.Z (64bit)from:
http://jscpreview.sfbay/javase/downloads/index.jsp

The "applets.html" contains some broken links:
Go to /usr/jdk/instances/jdk1.6.0/demo/plugin/applets.html
Here are the broken links:
- FAQ
- Documentation
- Compatibility with Previous Releases