What is a Google News Sitemap?
A Google News sitemap is a special type of XML sitemap that contains only recent articles (published within the last 48 hours). Unlike regular sitemaps that list all your pages, a news sitemap is specifically designed to help Google News discover and index your fresh articles as quickly as possible.
Submitting a news sitemap to Google Search Console is one of the most effective ways to ensure your articles get indexed in Google News quickly — sometimes within minutes of publication. News sitemaps use a special XML namespace (xmlns:news="http://www.google.com/schemas/sitemap-news/0.9") to include news-specific metadata.