The new sounds are interesting, eh?
I was trying to identify what the new 20XP / 1km sound was during a group ride yesterday evening after the update.
From my iPad speakers, over the sound of my fan, it sounded like a tyre skidding briefly on light gravel or perhaps a bottle of carbonated beverage being opened.
Was doing Surrey Hills, so very quickly was too busy keeping up to think about sounds. On the downhills I did notice a new tyre-rolling-at-speed sound (I think). The sound when passing through arches / getting power-ups has changed, too. Not unpleasant to my ears.
I can’t remember, but is it possible that the pinging sound of ride-ons arriving is less strident, now, too?
When I asked the other participants what they thought of the new sounds, only one other person was hearing them! The others who replied said that they always run Zwift with game volume off.