Google has been testing the search randomly on users and had not indicated to a launch today. The new search was highlighted sometime back by Search Engine Land.
Do you have the new search?
The Next Web says you can get the new search through the following means.
1. Go to Google.com
2. Once it loads, enter this code into your web browser’s URL address field:
3. Hit Enter.
4. Refresh Google.com page and now you should have the new Google Search.