The Simpsons Arcade achievements mention inclusion of 'Japanese ROM'

The XBLA adaptation of Konami's The Simpsons Arcade Game has yet to be officially announced, but we're learning more details about it regardless. The Achievements have been spotted by Xbox360Achievements -- they include one called "Mr. Sparkle," which requires you to banish dirt to the land of wind and ghosts. Oh, wait, we read that wrong. It requires you to "make it to the stage 3 bosses in Survival Mode with the Japanese ROM."

This suggests that the Japanese version of the arcade game is included. There are a few minor differences from the US release, according to HG101: lower difficulty, more health items, more points, and the ability to jump while holding a weapon. The inclusion of that international version also suggests that developer Backbone is putting a bit of extra care into this update.