Square Enix have annonuced the list of games appearing at this years Tokyo Game Show on the 10-12 of October.

• Kingdom Hearts: Birth By Sleep (PSP) - Trailer and Demo
• Kingdom Hearts: 358/2 (DS) - Trailer and Demo
• Kingdom Hearts: Coded (Mobile) - Trailer only

There have been demo's for the 2 games before but I believe this is the first public event where the 2 are playable so we can expect many leaked footage. (That's if they allow the demos to the public) And for those who are interested there is the rest of the list.

• Final Fantasy XIII (PS3/Xbox 360) - Trailer Only
• Final Fantasy Versus XIII (PS3) - Trailer Only
• Final Fantasy Agito XIII (PSP/Mobile) - Trailer Only
• DISSIDIA Final Fantast (PSP) - Trailer and Demo
• Dragon Quest IX (DS) - Trailer Only
• The 3rd Birthday (PSP) - Trailer Only
• Chrono Trigger (DS) - Trailer Only
• Star Ocean 4 (360) - Undecided
• Valkyrie Profile (DS) - Trailer and Demo
• The Last Remnant (360/PS3) - Undecided
• Chocobo and the Magic Picture Book (DS) - Trailer and Demo
• Final Fantasy Fables: Chocobo's Dungeon (DS) - Trailer and Demo
• Infinite Undiscovery (360) - Trailer Only

Source: TGS - Square Enix and Kotaku