They didn't mention that it makes them delay it. They just didn't want it to overlap with april's fools, and I understan that. But they could release it atleast today, since april's fools is over, and sab is just an automated festival.
I don't know what's wrong with them now... why is it so hard to release it exactly after april 1st atleast? Why do we have to wait so much, there won't be that new big content anyway. Just release it already.
Release it earlier! Atleast on 7th! It's not fair from you. A lot of people planned to play it today seriously. We can't cancel our free days. Changing a release date is not fun. :(