Updated - these new charts are now available to everyone. All instances of these apps on custom pages and dashboards have been updated to the new charts, and the apps in the app catalog have been replaced with the new version.
Now that we have milestone filtered custom pages in Agile Central, we've updated the milestone burnup and milestone cumulative flow diagram apps on custom pages to respect the milestone filtering on the page. Now that this is available to everyone, you'll automatically see these new charts on custom pages and dashboards where you previously had the old burnup/CFD charts. Thanks to morky01 for all of his work on this!