We all know Sony just recently announced a March 2010 release for GT5, but did not confirm a worldwide release nor giving any specific date for US and EU.
My thinking is the Japan version will be without NASCAR. It will take extra time to add the full NASCAR part to the game.
Also, I think Sony will premier this game at E3 because they needed a big game to counter Mario Galaxy 2/a new Zelda for Wii and Halo Reach for X360.
Outside of God of Wars and now Uncarted, Sony don't really have a name besides GT5 that can go toe to toe with the Halo and Zelda/Mario.
Both Final Fantasy 13 and Metal Gear Risen will be on X360 as well and new franchises such as The Last Guardian and Agent are too unknown and might not be ready till 2011 to really make an impact.
There are rumors of LBP2, KZ2, and/or Resistance 3 making the Fall release. But none of these games will be big enough to match the Nintendo trio of Zelda, Mario, and Metroid or Halo with the posibility of Gears of War 3 on the Horizon as well.
What do you guys think. What should Sony do?