If they're just summaries, then how could posting them on the internet possibly be dangerous? The NYT can't have it both ways. And why is the IAEI is so worried about them being posted, if they're just "summaries"?
They are apparently pretty detailed summaries with diagrams.
http://www.freerepublic.com/focus/news/667912/posts?page=1
***UK did this in 2002(released docs about nukes)***: "The plans give complete cross-sections, precise measurements and full details of materials used for all the components, including the plutonium core and the initiator that sets off the chain reaction causing the blast."