Let's all just calm down for a minute. A Halo movie has long been a dream for fans, one that's almost happened several times. The closest we got was a project that had Peter Jackson producing and District 9 helmer Neill Blomkamp directing. It was put to rest for a variety of reasons. Now there's information suggesting that a Halo movie -- from Steven Spielberg, no less -- is coming in 2012.
Not bloody likely, I say.
The word comes from a French language press release for the upcoming Halo: Cryptum novel (via CVG), which notes that a film adaptation of the popular series is set for 2012 with Steven Spielberg and DreamWorks leading the charge. This isn't the first time Spielberg's name has been attached to Halo, which I would guess is how it ends up being mentioned in the press release.
Unfortunately for fans, Hollywood productions can't really be kept under wraps the way video games are. This is especially true for a blockbuster production, which Halo would surely be, not to mention one with a name like Spielberg's attached to it. That 2012 timeframe is the big red flag here; there's just no way we're at most slightly more than a year out from a Halo movie without having heard anything.
Whoever wrote the press kit up was likely misinformed or simply working with inaccurate information. I've dropped DreamWorks a line just to be sure, but seriously folks: don't get your hopes up.