Well, that was expected after the excitement the game created through past months. According to Ubisoft Blog, The Division broke its first record by selling more copies in its first 24 hour than any other Ubisoft game before. There is no numerical data but a statement made by Yves Guillemot:
“The launch of The Division is a tremendous achievement for Ubisoft, and demonstrates our unrivaled capacity to create fantastic new game brands and transform them into entertainment blockbusters. (…) This is a momentous day for Ubisoft, but more importantly it marks the start of millions of players’ enduring engagement in The Division’s game world, which we are confident they will love.”
Tom Clancy’s The Division is now available for PC PS4 and Xbox One.