[Reason why the teaser came out tonight]:
The sudden release of teaser this time is most probably due to the mismanagement and communication breakdown either SM internally, or between SM and the Japan side. The release of teaser by right should also be delayed following the delay of albums, hence SM might also be surprised by this. This teaser was not released because SM did not take Korean fans’ feelings into consideration and intentionally released it in Japan market first. Nonetheless, SM has to be blamed for making such careless mistakes in operation and control.