WikiLeaks is promising to release its largest cache of classified files yet.

In a post on Twitter late Sunday night, the WikiLeaks organization wrote: "Next release is 7x the size of the Iraq War Logs. Intense pressure over it for months." An hour later, the group followed with: "The coming months will see a new world, where global history is redefined."

The whistleblower Web site released 75,000 confidential files on the war in Afghanistan in July and defied a series of warnings from the Pentagon and other government officials by releasing nearly 400,000 secret files from the Iraq war last month.

The volunteers at the site, which lacks a home base so as to avoid being shut down, are continuing their work even as Swedish officials prepare an international arrest warrant for WikiLeaks spokesman Julian Assange on rape charges. Assange has denied the charges.