Yes, Sony is developing the two sequels to "The Girl with the Dragon Tattoo"–which held better after its weak opening, but will have to struggle to reach $100 million–with the intention of making them. WGA-nominated Steve Zaillian has admitted to getting started on the sequel "The Girl Who Played with Fire," my favorite of Stieg Larsson's Millennium Trilogy. (And he has no intention of enhancing Lisbeth Salander's breasts.) That's a sizable investment for Sony: Zaillian doesn't come cheap.
But David Fincher is not on board: no director is. Therefore, in Hollywood parlance, with no approved script and no director, you can suggest that "The Girl Who Played with Fire" is going forward, but by no means does it have a green light. Sony's Amy Pascal can always pull the plug if the movie doesn't get to $100 million domestic, or disappoints overseas. The studio doesn't yet know those numbers.
UPDATE: But with Fincher's surprise DGA nomination and signs of strength in the awards derby, a sequel to "The Girl with the Dragon Tattoo" looks more likely than ever. Rooney Mara and Daniel Craig are on board but Fincher may not return. ThePlaylist reports that it's doubtful: Fincher plans to shoot "20,000 Leagues Under The Sea" by the end of 2012, and "Fire" is slated for Christmas 2013. And don't forget Fincher's "Cleopatra" with Angelina Jolie. Here's more.