Another rumor regarding Dead Space Extraction hitting XBLA and PSN came out today, and has EA actively working on the port.
No time frame was provided, and previous rumors
thanks to a survey from EA have it possibly hitting the services for $14.99 and it is presumed that it will integrate Move and Natal, obviously.
Visceral's "one game a year" policy combined with it
planning to offer XBLA and PSN games in between releases seems to give this rumor more wings than before.
Dead Space 2 is slated early 2011.