UngeheuerLich
Legend
Indeed some changes are there. When reading Mike Mearls articles you clearly see how important he was in 5e design.The funny thing is that using group checks to help with party Stealth was the example the designers gave when they were talking about group checks way back in the 2014 play test. So 2024 is completely altering the intent.
But that isn't the only place. Sometime someone should make a list of all the design goals/intents from 2014 that have been changed or reversed in 2024. I expect many people didn't notice, but whether you like or want to use them or not, it can have an effect on how your game plays, DM versus player expectations, etc.
On the other hand, monsters will also change. So we still don't see the full picture.
If monster's perception scores are even lower now, maybe sneaking is still possible.
Then sneaking allows you to benefit from the invisble condition which gives advantage on initative on top of everything else (except for making you actually invisble...). So you should check individually who starts combat woth that advantage. You could still do group stealth checks to determine general noise the party makes which determines encounter distance or so.