Yahoo announced they are changing their logo on September 4th at 9pm PT or midnight of September 5th. The change is a result of Marissa Mayer taking over the company and making huge changes throughout the organization, culture and via acquisitions.

Kathy Savitt, Chief Marketing Officer at Yahoo said:

So over the next thirty days, Yahoo is changing their logo on their home page and then placing the final logo on September 4th at 9pm PT or midnight of September 5th.

Here are day one and two logos:

To keep track of the logos each day, go to yahoo.com/dailylogo.

Some are nervous that a major logo change will result in what many other companies have tried to do and had to revert back to. Such as Tropicana and J.C. Penney and others.

Forum discussion at WebmasterWorld.