In 1965, This logo was designed by Lou Dorfsman.
In 2006, Walt Disney Pictures started using a new intro with a new CGI animation with a very complex depiction of the Sleepy Beauty Castle and its surroundings. It was a clear change from the old blue and white intro with its stylized castle and 2D animation.
The new intro was first used before Pirates of the Caribbean: Dead Man's Chest, which premiered in the United States on July 7, 2006.
If you watch an Disney movie and has this logo in 3-D, "WALT DISNEY" will zoom in.