Is the changing 'I'm feeling lucky' button new or has that been there previously? Mouse over and it changes. Clicking 'I'm feeling stellar' takes me to a page a

Is the changing 'I'm feeling lucky' button new or has that been there previously? Mouse over and it changes. Clicking 'I'm feeling stellar' takes me to a page about the Hubble telescope, 'I'm feeling puzzled' to a Google games page.