DoD News: Media Roundtable on Troop Extensions: "Q:  General, are any of these extensions -- will this result in any of these troops having been on the ground in Iraq for more than 12 months..."
"GEN. RODRIGUEZ:  ...Up to 14 months, the longest."

"Q:  What will the total be? ..."
"GEN. RODRIGUEZ:  ... approximately 150,000 in Iraq. ...late December, early January"

(Via GlobalSecurity.org.)