Start with the maker
Use official maker news pages and official stores as the primary record. Save the Japanese product name and product number even if you also keep an English translation.
Retailer dates can be useful, but they may represent the shop’s arrival estimate rather than the maker’s nationwide release date.
Separate three dates
Announcement, preorder opening, and release are different events. Limited items may also have a preorder closing date or lottery entry period.
Put each event in your calendar with the source link so you can verify changes later.
Expect revisions
Release months can move. Recheck official notices near the expected date before arranging shipping or combining orders.
This journal will gradually add monthly release notes as reliable information becomes available.