v22.04

Engine sounds added to the civilian 2011 Dodge Charger R/T in AI traffic. [ATS edition]
1 generic default car engine sound for AI traffic implemented: useful for other AI traffic cars without unique sounds.
Dropped support for 1.42 and 1.41 on the Steam Workshop in preparation for 1.44.

v22.03

Horn sound added to the 2015 Lincoln Navigator in AI traffic. [ATS edition]
Removed 1 default air brake sound.

v22.02

Engine sounds added to the 2015 Lincoln Navigator in AI traffic. [ATS edition]

v22.01

Engine and horn sounds added to the 1959 Cadillac Coupe de Ville in AI traffic. [ATS edition]
Simplified monorail vehicle sound. [ATS edition]
Replaced 1 default air brake sound and 1 default air brake sound for AI traffic.
New implementation of randomized brake squeal - chances of it being heard only apply if the left window is open.
Replaced 1 brake squeal sound.

v22.0

New high quality side angle sound for biplanes flying. [ATS edition]
Slight increase in sound volume for the standalone train horn.

v21.99

Engine sounds added to the Yamaha Wolverine in AI traffic. [ATS edition]

Dry wiper sound feature should now automatically switch to wet wiper sound after 11 wipes regardless of windshield state.
This is useful for cases of incompatible mod load orders - only affects the default wiper sound.

v21.98

Engine sounds added to the civilian 2003 Ford Crown Victoria in AI traffic. [ATS edition]
Horn sounds added to the Land Rover Range Rover (L322 generation) in AI traffic.

v21.97

Rework of tire sound on asphalt mix with a blend of tire whine and interior rumbles, now better adapted for all camera views.
Temporary 1.43 truck attenuation fixes are now expired. This is in order to pave the way for sound mods that will implement their own attenuation for the base game trucks.

-- Important --
If you don't have a sound mod that provides soundproofing for your base game truck, you can use these:
ETS2 previous soundproofing: https://truckymods.io/d/euro-truck-simulator-2/previous-soundproofing-ets2
ATS previous soundproofing: https://truckymods.io/d/american-truck-simulator/previous-soundproofing-ats

v21.96.1

Missing temporary attenuation fix for the Mack Anthem interior cabin has been added.
This will expire on December 14, 2021, but there will be separate mods that can supply this fix. [ATS edition]

v21.96

Horn sounds added for the 2008 Mercedes-Benz C-Class (W204 2008) in AI traffic.

-- Other news --
Winter sounds addon has been updated to version 2. It's available on the Steam Workshop in time for the Winter season.

For TruckyMods users: Guest downloads are now available for the Sound Fixes Pack.
It is no longer mandatory to sign up to download the mod from there.

Note: The 1.43 attenuation and equalization fixes for interior cabins of vanilla game trucks will expire in the next mod update on December 14, 2021.
There is a modding guide available if you want to learn how to adapt these for your truck here: https://forum.scssoft.com/viewtopic.php?f=201&t=306500
It is likely future engine sound mods or an official patch will now adapt to fix the attenuation issues.