Yes. It’s true.
“The 251,287 cables, first acquired by WikiLeaks, were provided to The Times by an intermediary on the condition of anonymity. Many are unclassified, and none are marked top secret, the governments most secure communications status.But some 11,000 are classified secret, 9,000 are labeled noforn, shorthand for material considered too delicate to be shared with any foreign government, and 4,000 are designated both secret and noforn.
http://www.nytimes.com/2010/11/29/world/29cables.html?pagewanted=1
Groan. I wish they had a reporter who knew something about classification markers. NOFORN is not a classification, it's a handling caveat, similar to FOUO (For Official Use Only). You can't have a document labeled NOFORN without a classification marking (e.g., TS//NOFORN; SECRET//NOFORN), so to say 9,000 are labeled NOFORN (implying that it's the only marking) is stupid if not misleading.
well I guess if you are going to use the New York Times as your authority, then I it must be true!