DLC Announcement: What is Microsoft Waiting For?

This article at Gameplayer asks why Microsoft has not announced what the Grand Theft Auto IV DLC is and suggests that the company would benefit greatly from making the details known prior to the games release.

"Really, what would Sony have to come back with? Reliability is its strong suit, but as we discussed yesterday, hopefully Microsoft has a plan to deal with this and certainly the popular and critically praised online infrastructure is hard to ignore. Microsoft has a $50 million dollar trump card: for God’s sake play it now! "