According to the latest Weekly Famitsu, Shin Megami Tensei IV now has a Japanese launch date: May 23, 2013. First-run copies will come with a “Sound & Art Collection.” A limited-edition 3DS XL featuring an original gods and devils design will also be available. The system will come with Shin Megami Tensei IV preinstalled. It will be released the same day as the standalone game.
Pre-order and pricing information is not yet available—we will bring you the news as soon as it is.
Source (http://gematsu NULL.com/2013/02/shin-megami-tensei-iv-japanese-release-date-set)