I'd agree with you if they'd released the trailer along with the announcement. As it stands, it's really just an announcement about how they're going to announce the game in a week.
It's like those stupid teaser websites where they show more and more of an image every day, except they know they're going to get a lot more coverage if everyone knows it's about GTA V right from the start.
The sad thing is that it's working. I count six articles on Kotaku already, and all we have so far is a logo.