Lady Layton: The Millionaire Ariadones Conspiracy will launch under the new title Laytons Mystery Journey: Katrielle and The Millionaires Conspiracy for 3DS in Japan, and iOS and Android worldwide on July 20, Level-5 announced.
The 3DS version will cost 4,800 yen, and the iOS and Android versions will cost 1,900 yen and have item-based in-app purchases. (You can reach the ending of the game without making any in-app purchases.) Supported languages include Japanese, English, French, Italian, German, Spanish, Dutch, and Korean. A western release of the 3DS version is seemingly also planned, as the press release mentions it will launch in Japan first.