The surprise announcement of LittleBigPlanet, MotorStorm, Assassin’s Creed, Dissidia Final Fantasy and Rock Band earlier this week made PSP the platform to watch in 2009 – and now Sony has added that half of it’s PSP slate for 2009 has yet to be revealed.

“At Destination Playstation we announced about half of the line up for the PSP this year, some fairly major, triple-A titles are coming for the back half of the year that are going to be announced in the coming months and at E3,” SCEA’s director of hardware marketing John Koller told Kotaku.

“LittleBigPlanet is going to be one of the top three but a number of others that are coming are just as big.”

It’s anyone’s guess as to what Sony could have lined up. Gran Turismo PSP is an outside possibility, and guesses thrown about the MCV office include more WipEout, Call of Duty, Dead Space, Mario & Sonic, Ghost Recon Advanced Warfighter, Mirror’s Edge and even, at a stretch, Grand Theft Auto.