Recently it was dated for the XBOX 360 release on March 30th 2010.

Prior to this Infinity Ward stated they would most likely also release it, but for PS3 exactly one month later.

Now, PS3 COULD be dated earlier than a month, but for now only the 360 date is confirmed 100%, the PS3 will be announced soon but its safe to say the latest it will come is April 30th.