Not only did Google just update their homepage search box and buttons, but they added an interesting placement for their "Google Search" and "I'm Feeling Lucky" buttons.
Now when you start typing a search phrase you will notice a new UI for the suggested search drop down. Both buttons appear inside the search suggestion drop down. Also, clicking one of the suggestions will start the search for that phrase.
Now I understand the click to search feature, that's rather handy. But adding the search buttons baffles me. How are they helpful?