While the previous Ace Attorney games were ports and featured Phoenix Wright as the main character, Gyakuten Saiban 4 (AKA "Ace Attorney 4") is not a port and doesn't feature the blue suited attorney. Instead, the game is a totally new entry in the series, designed especially for the DS and featuring a new attorney. But what about Phoenix? We like Phoenix! Says Capcom producer Minae Matsukawa:

Phoenix Wright does make his appearance in Ace Attorney 4. Since it hasn't even been released in Japan yet, I don't want to give away too much.

Ace Attorney 4 has set an April 12th court date for release in Japan. Brian Ashcraft

Phoenix Wright Makes Cameo [Spong]