Microsoft assumes that the number of people wishing to get acquainted with the new browser will steadily grow every day, and then the Automatic Updates function will take over the business, which will deliver the application to users who are not interested in it. Automatic updates will take effect over the next few weeks.
Work on IE7, by the way, is not finished yet. The developers are planning to release two product modifications designed specifically for the Windows XP and Windows Vista operating systems.