They've been trying to make this one for some time, but now it's all finally coming together. The vast majority of the VFX work is being done by Digital Domain, who've had a team working on it for close to 2 years. I'm not sure who's supervising the work, as that company has gone through a lot of recent upheaval like the rest of the industry in Los Angeles, but what I hear of the look and feel is positive. Still, it's such a popular book and no doubt everyone's had their own uniquely imaginative view of what it should be that it's going to be really hard to please the fans.