Better explanation of the new feature.
diff --git a/org.jacoco.doc/docroot/doc/changes.html b/org.jacoco.doc/docroot/doc/changes.html
index 51d0384..01e2883 100644
--- a/org.jacoco.doc/docroot/doc/changes.html
+++ b/org.jacoco.doc/docroot/doc/changes.html
@@ -25,7 +25,8 @@
   <li>Support for offline instrumentation (GitHub #4).</li>
   <li>JaCoCo agent exposes runtime API for direct integration with application
       under test (GitHub #61).</li>
-  <li>Support for parallel test execution (GitHub #52).</li>
+  <li>Support for parallel test execution: Different agents can now safely write
+      to the same <code>*.exec</code> file (GitHub #52).</li>
 </ul>
 
 <h3>Fixed Bugs</h3>