First of all, thank you for the clarification.
I used the titles exactly according to their intended purpose. For previous update announcements, I chose General Update, just as it’s described.
This time, however, we’ve added a mechanical and story-related update to the game. This update changes the way players experience the game, offering them a different experience from the previous version, which is why I used Major Update. From what I understand, it’s either waiting for manual approval or just taking a bit longer for some reason.