The Grand Theft Auto IV trailer is also available for download in high definition, as is the Armored Core 4 demo. Microsoft's Peter Moore, proud that Xbox Live got the GTAIV trailer up before Sony, has added yet another tattoo on his arm to add to his collection of AAA-titled inkings.
All of the content will be available free of charge and should be online sometime today.
[Update: It's the Armored Core 4 demo, not trailer, that is released today. All parties responsible for the error have been thoroughly sacked.]