Android 10 or 11, I did see that on the S10 that I had. That’s a handy feature that Apple doesn’t have yet but in terms of managing notification when they arrive this is more elegant. It gives you a chance to store your unread notifications until it suits you to read them.
Granted I damn hated it for the first few weeks, having all these notifications hanging around bugged the hell out of me but then I realised the ones stored in the notification pull up are all non-urgent so you just keep focused on the priority ones and it’s easy sailing.
Then later when you have a gap you can sort out the old ones, you actually get to read them, whereas on android I’d have been swiping them away all day without reading them, just to clear space.