The original plan was to share some promotional materials from upcoming Fox projects like Doug Liman's Jumper, Vin Diesel's Babylon A.D., Timothy Olyphant in Hitman, the highly-anticipated The Dark Is Rising, and (of course) this winter's Alien vs. Predator 2.

While all the other studios will be neck-deep in marketing tricks and enthusiastic nerds, Fox will be hard at work getting their packages ready. From the L.A. Times: "The material wasn't ready and we only want to go out when we can put our best foot forward," Sean Dudas, the studio's vice president of national publicity, said on Wednesday."

Fox's "Atomic" division will still be on hand to hype the Kevin Bacon revenge flick Death Sentence and the Rainn Wilson comedy The Rocker. Comic con attendees should take note, though: Word is that Fox still has a few 'surprises' in store for the event. So keep your eyes peeled for aliens, predators, and Vin Diesel.

UPDATE: According to CHUD.com, there might be another reason for Fox's last-minute plan-change. Apparently the "con" does not approve of R-rated materials, and since most of the studio's fare will be leaning in that direction, they figured it wasn't necessarily worth all the expense. Interesting theory.

Source: L.A. Times, CHUD.com