Official footage from the demo of Irrational Games' Bioshock Infinite will be available to watch later today.
The video will be available on Xbox Live and Xbox.com. Although exact timings are still unknown, the trailer will be available for 24 hours.
Tomorrow, Irrational Games will post the footage on BioShockInfinite.com and distribute the video worldwide - so expect to see it right here on CVG.
The video has previously only been presented to limited press audiences behind closed doors - but sounds a lot like the leaked footage seen over the weekend.
According to Irrational, the demo opens with the game's protagonist, former Pinkerton agent Booker Dewitt, battling through the streets of Columbia, a crumbling city in the sky. He has come to rescue Elizabeth, a mysterious young woman imprisoned there since childhood.
As DeWitt and Elizabeth merge their powers in a desperate bid to escape the city, viewers will witness intense indoor and outdoor battles, new weapons and abilities, and dangerous new enemies including Elizabeth's terrifying captor.
BioShock Infinite is due for release in 2012 on 360, PC and PS3.