Take-Two recently posted their Finacial Result for the year, along with their Schedule for future release. In the release, they showed that GTAIV downloadable content will only be coming to the Xbox360 in 2008. This could be what Microsoft was talking about back in '06.
Although content has not be officially confirmed for the PS3. Many reports seem to lean towards there being content for the PS3 too, it just may come out a little later.
Link:Link to source, GTAUnderground news
Edited by Tommy Montana, 14 June 2007 - 08:12 PM.