Empire has just learned that JJ Abram's secret project, generally known as either Cloverfield or 1-18-08, is to be released on February1 in the UK. Guess that means we can rule out 1-18-08 being the final title, unless Paramount really want to confuse people.
There's still next to nothing known about the movie, which Abrams is producing and Matt Reeves directing, although it's generally accepted that it centres on a monster attacking Manhattan.
There are clues to be pieced together, which you can find here and here and at the official site here. If you have further pieces of the puzzle, please do share.