reStructeredText (ReST) is now the default content format for all the standard ATCT objects (Pages, News, Events) and EasyBlog, for all sites on this server.
For now, if you still have Kupu as your editor then the default will be overriden by Kupu to html.
Be aware though, that since we are going to use Vasudevaservice.com as testbed for reStructuredText, Kupu has been uninstalled there.