"In 2021, Glibert explained that his Grumpy Gamer blog "has been and always will be April Fools' Day free" for 17 years running." [1]

It has been a joke long in the making.

[1] https://gamerant.com/monkey-island-ron-gilbert-return-teaser...

He tweeted in 2013: "If I ever get to make another Monkey Island, I'm going to announce it on April 1st." [1]

Really playing the long game there!

1: https://twitter.com/grumpygamer/status/380819751208902656

I still remember this one: https://www.washingtonpost.com/history/2019/04/01/when-googl...

The unique news here is that the director of the first two games in a popular series is returning to it. This may be a GenX/early Millenial nostalgia thing given that these two games are from 1990/1991; the "point and click adventure" genre has fallen from favor over the intervening decades.