Google generally would use incoming links, sitemaps, etc to index new files and websites, and with  this new addition newer websites won’t find it hard to get indexed on Google. All you need to do is set up your RSS/Atom feed and as an added measure make sure your Robots.txt file doesn’t block it.

In my opinion this feature had been in practice for quite some time, but its only now that Google announced it officially.

Anyways, all good for webmasters.

Via : Google Webmaster Central Blog