We know nothing about this game at this point sadly. Maybe TGS09 will shed some light, maybe...
What i personally, am really really REALLY hoping for, is Kojima's [full] involvement in story and cutscene direction (and i hope there's a lot of them too :D). Also the placement of the game in between games 2 and 4 would be just the right thing to do, as in my opinion there's a strong story to be told regarding Sunny's rescue and Raiden's transformation.
As far as gameplay, i think something similar with Tenchu is a pretty good guess, but then again it could be something completelly different.
As i said, we know nothing at this point ^_^
"You have the right to the remains of a silent attorney"







