Microsoft has released Enhanced Mitigation Experience Toolkit (EMET) 5.0

EMET is a free tool, designed to help customers with their defense in depth strategies against cyberattacks, by helping block and terminate the most common techniques adversaries might use in comprising systems. EMET 5.0 further helps to protect with two new mitigations, and with new capabilities giving customers additional flexibility on their deployments.
EMET helps to protect systems, even before new and undiscovered threats are formally addressed by security updates and antimalware software.

This is what some customers have said about EMET:
"EMET is not a policy-changing tool, but it might just be that additional piece of security software that is worth investing in.” – Wolfgang Kandek, Qualys, Windows EMET Tool

Guards Against Java Exploits, 2014
(The Java- and plugin-blocking feature should) effectively stymie most of the historical attack methods related to Java and Flash. Those two applications have historically caused a lot of heartburn for security teams." – Andrew Storms, CloudPassage, Windows EMET Tool Guards Against Java Exploits, 2014

  General Availability for Enhanced Mitigation Experience Toolkit (EMET) 5.0