1.18 Ambient Sound Effects?

In both the 1.18 Detlas teaser trailer and the the new 1.18 reveal trailer, I noticed that there is ambient sound effects like birds chirping, bugs buzzing, rushing water (and not the normal minecraft sound for rushing water as far as I can tell), a sound effect for a sawblade and what seems to be a grain refiner, and a bunch of other small sounds as well.

I guess what I'm wondering is, are these sounds just put in over the video to make it sound nicer or are these going to be present in the game when the update comes out, and what do you all think about this?

(idk if this thread should go into a different category or not)

 

I was thinking about this earlier, I don't know if it'll be in the game, I hope it is though!