First they changed their name, now they’ve changed their logo. Google introduced a new sans-serif and slightly toned-down four-colour logo on Tuesday in the biggest redesign since 1999.Google said the new design would soon be seen across all its products. Google’s homepage introduced the redesign with an animation that wiped away the old logo and drew the new one.
http://www.theguardian.com/technology/2015/sep/01/google-logo-history-new-doodle-redesign