Lately we’ve seen a lot of changes to Google Sitemaps. Now Google has just released a few new features including statistics, details, errors and mobile search queries.

1. Query stats: average top position - the highest position any page from your site ranked for that query averaged over the last three weeks.
2. Top mobile search queries - Top search queries from mobile devices that returned your site in the results, but not the clicks.
3. Downloading Sitemap details, stats and errors - Download CSV (comma separated value) file containing all details, errors and stats in one file.

Among the new features, the keyword ranking may be the most important information for the search marketers.

Source: Inside Google Sitemaps.