Yes, encrypted searching. Google has launched a new search service which allows your search terms to stay private and does not provider referrer data (which website you went to from the search results) for other web servers. However, Google retains this information.
I can see this being helpful if you are on an open WiFi network and wish a little privacy. Right now it is available only on google.com, not on the country-specific domains.
The URL is https://www.google.com/. Note the protocol used — https; also “www” must be used to reach the encrypted service. FYI – this is in beta.