The news feature – both the news-xmlui.xml and related news-side and news-top .html files for xmlui live in the dspace/config dir. It seems like there should be a better location for these, other than the config dir. When changes are made to news, they are not propagated unless the init_config ant task is run.
(Note: this JIRA task is the Topic of a dialog int he DCAT concerning ease of managing Content int he main Homepage of DSpace.).