They've always relied on Friday morning drops in each bigger promotion that's happening within Madden 22 Ultimate Team, and they may kick things off Mut 22 coins at any point next week or even earlier.
Whatever the case, we'll probably see the announcement during a Wednesday edition Good Morning Madden, get an official announcement with the majority of the players on next Thursday's edition of Good Morning Madden, and this will culminate in the program drop during the Friday dawn. That could put the launch date as early as the 3rd of December in 2021 but historically, they've waited an extra day into the month to kick things off which is why the most likely date would be to be around December 10 2021.