Updated frontpage for 0.6.11 release

Author: rozza

_includes/themes/mongoengine/frontpage.html

@@ -51,19 +51,10 @@ <h1 class="logo">MongoEngine</h1>
 {% endhighlight %}
       </div>
       <div class="tab-pane" id="announcements">
-          <h3>v0.6.8 Released</h3>
+          <h3>v0.6.11 Released</h3>
           <p>
-            Multiple minor fixes and added choices to GenericEmbeddedDocuments and GenericReferences.  See the <a href="http://readthedocs.org/docs/mongoengine-odm/en/latest/changelog.html#changes-in-0-6-8">change log</a> for a full list of changes.
-          </p>
-          <h3>v0.6.7 Released</h3>
-          <p>
-            Fixes for replicaset connections and read preferences now supported.
-            Added support for _id in indexing.  Auto creation of indexes is now configurable.
-          </p>
-          <h3>v.0.6.6 Released</h3>
-          <p>
-            Mostly has bug fixes and adds support for both Django 1.3 and Django 1.4
-            Upgrade today!
+            Multiple minor fixes and a new reverse_delete_rule (PULL).
+            See the <a href="http://mongoengine-odm.readthedocs.org/en/latest/changelog.html#changes-in-0-6-11">change log</a> for a full list of changes.
           </p>
           <h3>Roadmap released</h3>
           <p>