Kingdom Hearts: Birth by Sleep impressions at PSPFanboy.

"Remember this? This is the original Birth by Sleep trailer that was hidden at the end of the Japanese release of Kingdom Hearts II: Final Mix. But this is not Kingdom Hearts III for PS3. No, it's not what you were expecting at all.

Kingdom Hearts: Birth by Sleep, revealed at Tokyo Game Show today, is a brand new PSP game that expands the story of the franchise not by looking forward, but by looking back. This prequel stars a character that strongly resembles (but is not) Zack from Final Fantasy VII (and most recently, Crisis Core). In addition, we see a character that appears to be a clone of Roxas -- but that's impossible, considering the massive time difference between Birth by Sleep and the original console games. Certainly, there's a lot of mysteries surrounding this upcoming title."

Full Source: PSPFanboy