I highly doubt all of them are unannounced. Maybe one or two will be, and that doesn't even include something we were all expecting. If there is a "surprise" it will probably only be one game.
SSB (announced)
Bayonetta 2 (announced)
X (announced)
Zelda U/HD/whatever (unannounced but expected)
Miyamoto's supposed new IP? (unannounced surprise)
Though you could also replace that last one with a Retro game, be it Metroid, DK, or an original IP.