Tomb Raider Global Brand Director Karl Stewart just confirmed on Twitter that there will be no demo for Tomb Raider before the launch of the game. He said:
For all those @tombraider fans asking. There are no plans to release a demo of the game pre-launch. We don't want to spoil the story. We've weaved such an personal story we don't believe spoiling it by having you wait a week or so to play on, delivers on our promise. I talk about it a bit in our latest @tombraider Crystal Habit podcast which is due to drop tomorrow.
Tomb Raider is scheduled for March 5 release on PC, PS3 & XBOX360.