Rockstar has
gone on to say that because they have to work with the issue of not every SKU being guaranteed a hard drive for the Xbox 360, they're running into some limitations currently with
Grand Theft Auto IV. They go on to say that they have plenty of storage with the PlayStation 3 since every PS3 has a HDD and Blu-Ray drive. We won't know if there will be any difference between the versions on the two consoles until later on but I think Rockstar should just go with the hard drive required route and put the game out that way.