Google have rolled out a new “website preview” feature, changing the way people search yet again. Websites that can be previewed have a little search icon to the right of the link , when you hover over this icon it lights up .
Once you see the icon light up, click and you will see the website preview load up and be displayed.
Once the feature is activated, it will load up each preview for each search result as you hover. To de-activate it simply click on a search result again.