On October 23, WikiLeaks said they had finished processing the remaining 15,000 documents on Afghanistan and would publish them soon.
I assume that WikiLeaks made this announcement in order to frighten other governments. They certainly didn’t make this announcement because they intended on actually releasing the documents.
Perhaps WikiLeaks wanted something from another government and threatened to release the files in order to get it. If so, I guess WikiLeaks got what they wanted because they never released the remaining 15,000 documents.