According to Charles Alsheimer this holds true north of the 35th parallel. In the south thingscan be muchdifferent. Here is a link to his rut predictions for this year.
http://www.deeranddeerhunting.com/article/Rut2008/Yeah things can change based on your location. Weather and hunters can cause a huge shift in when the rut happens, butfor the most part the rut in the north should be in full swing.