It's not that there's anything wrong with telling the real-life story of a bi-polar whistle-blower (Damon) with a more decidedly comedic bent, but 'thriller', this does not scream. Then again, maybe Soderbergh just wanted to lighten things up after the epic Che and the austere The Girlfriend Experience, and if that's indeed the case, things do seem to be heading more towards the Ocean's Whatever lark end of his spectrum.
Although most sites seem to have The Informant! with an October 9th release date, the trailer and the page around it (you know, with the 40-Year-Old Virgin-like possible poster art) both state September (in line with a 9/18 date we've seen floating around elsewhere). Either way, I suspect that an appearance at one of this fall's high-profile festivals will help assure us that the film does indeed merit its especially enthused punctuation and that the Damon does indeed merit his schlub-tastic appearance.