Impatient fans and savvy importers know that the Phoenix Wright games in Japan (Gyakuten Saiban) are released with both English and Japanese languages on one cart. But according to Play Asia, the fourth game in the series won't follow that trend. Written on the Gyakuten Saiban 4 product page in big bold letters are the foreboding words "Japanese language support ONLY".
Don't panic, this doesn't mean the game won't be localized. With importers jumping the gun and grabbing the Japanese copy before everyone else, Capcom is simply trying to ensure their localization efforts aren't going to waste.