According to Google’s official blog they are testing a interface in their search result that will be have the ability to scroll infinitely. So you don’t have to keep loading every next page. The navigation bar and the sidebar will still have a fixed position so you can search for a new search without reaching the top of the page.
And its also said that most of the changes can be viewed from the Google Images Search. This is definitely going to be something to watch out for as it is going to make search in Google even more easier and quicker.
Here’s a preview of the interface.