Hey old friends 2022 said: "Some of the changes will be public knowledge once the album comes out next month.
I'm not sure what you mean by this. I finally got a boot of the album, and the only changes I noticed are that the ad-libs in Willkommen are slightly different. It seems the same, otherwise. (Unless you're talking about the first version of Tomorrow Belongs to Me.)
But also, it kind of saddens me to see so many people here dumping on the Sam Mendes production. I know some users have constantly been bringing it up as a comparison to criticize this production, which is annoying, but I also don't think doing the reverse is necessary. Shultz and Schneider are side characters. Boring is a matter of opinion, but I thought Sara Kestelman's Olivier-winning performance was incredible and gutting, and Danny Burstein was such a fantastic Herr Schultz more recently.
From everything I've heard, this production is more of an ensemble piece, and that seems like a really cool way to approach it! Productions I've seen tend to either center Sally or the Emcee or both, so I'm glad this one found a new approach. Still, nearly every production since the 90s, including this one, owes a great deal to the changes made for the Mendes version. You can celebrate the shiny new thing without trashing what came before.