Yeah. Josh Pollack has an excellent article in the current issue of Playboy (link is pr0n-free) in which he reveals the identity of the fourth country (in addition to Iran, Libya and North Korea) to which AQ Khan provided centrifuge technology: India.

TMZ attributes this issue’s rapid sales to the photos of a certain actress, but I think it’s obvious that purchasers are after Josh’s article.

Update:

For a primary source, at least on the IAEA’s investigation of the AQK network, check out Olli Heinonen’s comment in this post.