“He [Gates] said it did not affect the Marines, whose standard tour is seven months, nor the Army National Guard or Army Reserve, which will continue to serve 12-month tours.
Gates said the new policy also seeks to ensure that all active-duty Army units get at least 12 months at home between deployments. He said it would allow the Pentagon to maintain the current level of troops in Iraq for another year, although he added that there has been no decision on future troop levels.”
FOXnews.com
This does pertain to our family with one son for sure and another up in the air.