What's the opposite of OBJECTION!? Oh, we know! APPROVAL! A Gamecrazy employee posted this screen from his store's computer system over on the awesome Phoenix Wright fansite Court Records. It shows a game called PHOENIX WRIGHT-TRIALS TRIBU, to be released on September 25. We'll go ahead and deduce that the full title would be Phoenix Wright: Trials and Tribulations, and that since it names Phoenix in the title and not the new guy, that this is a DS port of Gyakuten Saiban 3.
Retail computer systems aren't the most reliable sources of information, but we doubt Gamecrazy would make up a title. Plus, we've had evidence that GS3 was going to be localized for a while.
Now, if you'll excuse us, we're going to go to Gamecrazy and reserve our copy of the game. If they aren't open yet, we'll just break in. No problem!