OVDB-75: Added a 6.0.0 release news item.

Signed-off-by: Peter Cucka <peter.cucka@dreamworks.com>

Author: pcucka

index.html

@@ -95,6 +95,16 @@ <h1>Welcome</h1>
 
           <h2>News</h2>
 
+          <div class="news_item">
+            <h3>March 8, 2019</h3>
+            <p>OpenVDB 6.0.0 is now available to
+               <a href="./download/" target="_blank">download</a>.</p>
+            <p>This is a relatively small release, but it includes some ABI changes
+            to improve the performance of point data grids.
+            See the <a href="./documentation/doxygen/changes.html#v6_0_0_changes"
+               target="_blank">release notes</a> for a complete list of changes.</p>
+          </div>
+
           <div class="news_item">
             <h3>December 13, 2018</h3>
             <p>OpenVDB has been recognized with a
@@ -164,23 +174,6 @@ <h3>November 6, 2017</h3>
                target="_blank">release notes</a> for more information.</p>
           </div>
 
-          <div class="news_item">
-            <h3>July 28, 2017</h3>
-            <p>OpenVDB 4.0.2 is now available to
-               <a href="./download/" target="_blank">download</a>.</p>
-            <p>Highlights of this release:
-            <ul>
-                <li>help cards for Houdini nodes (in Houdini&nbsp;16)</li>
-                <li>a new tool for fast, threaded compositing of leaf-level voxels</li>
-                <li>a tool to clip grids against camera frustums</li>
-                <li>enhanced support for point data grids, including Mantra
-                    and <tt>vdb_view</tt> support</li>
-                <li>value type conversion options in the Houdini Convert&nbsp;node.</li>
-            </ul>
-            <p>See the <a href="./documentation/doxygen/changes.html#v4_0_2_changes"
-               target="_blank">release notes</a> for more information.</p>
-          </div>
-
         </div> <!-- end section -->
 
       </div> <!-- end content -->