World in Conflict was first announced as coming to Xbox 360 back in 2007 by publisher Sierra Entertainment. Later, the ambitions shifted to the sequel, World in Conflict: Soviet Assault and the PlayStation 3 entered the picture. When Vivendi, parent company of Sierra, merged with Activision, many of Sierra's projects were canceled or dropped, including Soviet Assault. It was later saved by Ubisoft when that company purchased the World in Conflict developer, Massive Entertainment.
However, it seems that Ubisoft's ambitions are not as grand as Sierra's were. When contacted for an update on the console release, Ubisoft provided this statement, "World of Conflict: Soviet Assault will be released for the PC later this month. A console version of World in Conflict is not planned for release at this time."