I don't think it exist. They had chance to announce the game during playstation destination.
And e3 and tokyo game show and ....
Just because they are making a game don't mean they HAVE to announce.... how many games were anounced a few months left for the release ?
Half of nintendo's last 2 e3 lists for example
Wasn't the saturn that was announced in the month of release ?
And trust me, they didn't made those games in a few months =P