In first April 2001, Microsoft saying the upgrade Windows 2000 that choose launching to Whistler on June 20, 2001. Because the milestone 2 was release on June, is leaked on Internet in August 2001. For four day ago, Whistler release to office on May 25, 2001. But that every five day, Whistler release on June 20, 2001. After starting release milestone 2, was release on June 24, 2001.