UPDATE: 1:13 p.m. EDT: WikiLeaks unveiled a draft of "The Future of Internet Governance," the guidelines for a meeting between representatives from 12 countries, including France, Germany, and the United States, and hosted by Brazil.

Representatives will discuss the "principles of Internet governance and the proposal for a roadmap for future development of this ecosystem," and live hubs will be held in 33 cities across 23 nations to allow the public "real time" interactions with the event in São Paulo, scheduled for April 23-24.

Originally: Julian Assange’s whistleblowing website, WikiLeaks, said it will make an “announcement relating to the future of the Internet” on Twitter Tuesday.

The site began teasing the announcement on the social media platform before 10 a.m. EDT. Last April, WikiLeaks published more than 1.7 million diplomatic cables and intelligence documents from the 1970s. Those documents included the so-called Kissinger cables, in which former Secretary of State Henry Kissinger was recorded saying, “The illegal we do immediately; the unconstitutional takes a little longer.”

WikiLeaks drew international attention four years ago when it unveiled a video showing classified cockpit gunsight footage of a 2007 Baghdad airstrike.

Assange announced earlier this month that he was writing a “major” new book, in which he said he would detail a 2011 encounter with Google (NASDAQ:GOOG) Chairman Eric Schmidt. His publisher said that the book, “When Google Met WikiLeaks,” includes “an historic dialogue” between the “North and South Poles of the Internet.”

The book is scheduled to be published in September, and in it Assange is expected to recall a meeting with Schmidt during his 2011 house arrest, when he argued for “the liberating power of the Internet … based on its freedom and statelessness” -- and  Schmidt countered by saying “emancipation is at one with U.S. foreign policy objectives and is driven by connecting non-Western countries to American companies and markets,” according to publisher OR Books.

This is a developing story. Follow Reporter Thomas Halleck on Twitter for updates @tommylikey