Matt Selman says on 22nd. which means... a minievent? :(

"txrabbit3737;c-2096364" wrote:

"thatdonald845;c-2096344" wrote:
Not a mini event, a full four week event with plenty of new content according to the site for addicts. Good news! But they say it starts Wednesday.

That means the update comes tomorrow, and then triggers on Wednesday, probably at 9am Central.

yes
also the splashscreen
https://twitter.com/TheSimpsons/status/1186382901329350656?s=19