The following is considered rumor. Take it how you will:
The September DLC line up for MW3 has been leaked. the web site MP1st.com has video game play footage and pics of the DLC maps.
Click this link for the MP1st site with pics and vids of the leaked Sept. DLC for MW3:
http://mp1st.com/2012/07/28/rumor-mo...ode-in-august/