"The big daddy of secret AAA shooters to be revealed next month"

[Dallinor]

Another shooter...

"What sort of half mad half crazy maniacs are they?"

(^ epic futurama quote :D)

It could be Doom, The new Socom, Bioshock 2 gone multi, or even just some info on some already announced FPS.

I highly doubt there is a secret FPS in the works at Sony, there is just no need at present for one.