EA and Visceral Games announced a few details concerning the demo of the game. Enjoy "The Story so Far" in a trailer.
A demo for the game releases on January 22 2013. If you own the Xbox 360, you might want to visit demo.deadspace.com in order to player the demo one weak early. Dead Space 3 will release on February 8 2013 in Europe for PS3, Xbox 360 and PC.