Google recently announced an update to Webmaster Tools sitemaps.

According to Google Webmaster central Blog, from now on sitemaps page will also display statistics from Web, Videos, Images and News, thus retiring Video Sitemaps Labs. This new addition will let you know how many items of each type were added and for few content types, the number of indexed items.

You can now test a sitemap for errors taking only a few seconds to complete. But the initial testing may miss the errors which can only be detected only once the URLs are downloaded. Besides this, errors and warnings will now be displayed in groups and errors and warnings from child sitemaps have been aggregated for Sitemap index files, so that you do not have to click through each child Sitemap.

Towards the end the working of the "Delete" button has been changed. It will delete the Sitemap from Webmaster Tools, from the accounts of the owners of the website.