While no kind of official announcement has been made (yet), The Weinstein Company has quietly made changes on their media sites and we presume they are getting their ducks in a row to start a campaign for the movie, which opens on August 31st. Their official press site now lists the movie under the new title, the Facebook page has been renamed and the final bit of confirmation comes from their publicity site, which now has "Lawless" slated with the release date for "The Wettest County." And finally, the old Twitter feed for the movie has been killed off. So yeah, this is about as confirmed as it gets.
In a curious side note, "Cogan's Trade" is still going by that title for now on the Weinstein sites, despite reports that it was being retitled "Killing Me Softly" a few weeks ago. But they may not have gotten around to making those changes internally just yet, so we'll have to wait and see. Your move, Malick. Screencaps of the TWC publicity site below.