Java SE Runtime Environment (JRE) - JRE 6 Update 13
The full internal version number for this update release is 1.6.0_13-b03 (where "b" means "build").
The external version number is 6u13.
This release includes the highly anticipated 64-bit Java Plug-In (for 64-bit browsers only), Windows Server 2008 support, and performance improvements of Java and JavaFX applications.
Release Notes.
For: Win 2000/Server2003/Server2008/XP/Vista
This Update contains security and bug fixes and other enhancements. Please update:
http://java.sun.com/javase/downloads/index.jsp#docs