All winners will be notified by mail between May and July of the year following the year in which they entered. Winners will be provided further instructions, including information on fees connected with immigration to the U.S. Those selected in the random drawing are NOT notified by e-mail. Only winners are notified. Those individuals NOT selected will NOT receive any notification but may enter again in the next available drawing. Spouses and unmarried children under age 21 of successful entrants may also apply for visas to accompany or follow to join the principal applicant. DV-2009 visas will be issued between October 1, 2008 and September 30, 2009.
For more information, go to this link: http://myusai.com/about-the-lottery/Green-Card-Info.html#How%20are%20winners%20noticed?