Server owners will need to add/modify these 2 new properties in the serverconfig.xml. These filters will help players find your server.

Values must be one of the following:
NorthAmericaEast, NorthAmericaWest, CentralAmerica, SouthAmerica, Europe, Russia, Asia, MiddleEast, Africa, Oceania

Values: Use any language name that your players would expect to search for. Should be the English name of the language, e.g. not "Deutsch" but "German". This is a filter name only and DOES NOT SET the language for players.

A20.4 B38 Changelog:

Added 

• Language selection under Video > UI. Defaults to the platform's language (on Steam the language that is selected in Steam for the game, otherwise the host system's language)
• EOS P2P networking for cross platform P2P games
• Destroy area attacks partial blocks it moves into 
• AI ApproachAndAttackTarget decreases path update rate at farther distances 
• Path generation canceling on a new path request 
• Cr console command u, utimed and ue parameters 

Changed 

• Launcher on Windows now stores log files in %APPDATA%/7DaysToDie/logs folder
• Screenshots are stored in /Screenshots (i.e. the folder that also stores saves, e.g. on Windows %APPDATA%/7DaysToDie/Screenshots) 
• Mods are now loaded from /Mods (i.e. the folder that also stores saves, e.g. on Windows %APPDATA%/7DaysToDie/Mods) in addition to /Mods. In a future build this will change to only load from that new location so no data is written/changed in the program folder at any time. 
• Reduced sleeper volume attack target time 
• Changed SkyManager to explicitly set shadowCustomResolution for the moon and sun lights based on the ingame "Shadow Distance" setting: 1k for Low/Medium, 2k for High, and 4k for Ultra/Ultra+. This gives more consistent results in terms of performance and fidelity when changing the setting, regardless of the user's output screen resolution. 
• MacOS builds target x86_64 only for now until third party code supports M1 you can still run the game on M1 Macs with Rosetta, but you no longer manually have to enable it 
• Reduced achievement goals for: Dying, PvP kills, game stage, and staying alive 
• Favorite and history servers are now stored independently of Steam 
• Removed display name from non-lootable produce baskets 
• Improved path generation state switching and aborting 
• Optimised SpeedTree shaders by multicompiling a version without FadeOut behaviour and automatically swapping to it whenever the FadeOut value is set to 1 (fully opaque). 

Fixed 

• Giving the same command line argument to the dedi multiple times causes exception but no startup abort 
• Errors in dedi config does not cause the server to immediately shut down after the errors are logged 
• Client side NRE spam after kicking a player with ESC menu open 
• Opening the map on a controller attempts to open On Screen Keyboard 
• Vulture sleepers flapping when spawned 
• Cases of falling into ground if chunk colliders reallocated during baking 
• Rare invisible chunk colliders if changed and cleared during baking 
• Drone's light doesn't affect player stealth 
• Junk drone dye not applying to all tint parts 
• Drone dye displays differently between clients and hosts  Dedi and P2P issues 
• Only the first Drone Cargo Mod can be added by drag and drop 
• Ranged actions doing tool belt notifies more than once per execute 
• Sporadically vehicles can reload underground and get moved (IsChunkAreaCollidersLoaded check) 
• Silly votes and actions conflict with each other. 
• Activating quest marker at POI can reset adjacent POI 
• Robotic turrets stop working when placed higher than where the player is standing 
• Removed Unity Screen Selector option from game launcher as Unity does no longer support this 
• 2 wheeled vehicles are very good at climbing vertical walls 
• Zombie pathing/digging can fail/struggle when the player is too far underground 
• Fixed shadow clipping bug in the SpeedTree8 shader by implementing Unity's SHADOW_CASTER macros to correctly handle shadow pancaking. 
• Server list not updating the table when new data for an existing entry comes in 
• Changing server list sorting did not apply until filters are changed or a new server shown 
• Resetting filters in the server browser causes any filter fields that are min/max input only (like game days) to fail 
• Playing doctor achievement triggers without proper requirements 
• Billboard shapes had inconsistent harvest events 
• Players can be damaged and rag dolled by vehicles on log in 
• Treasure chest appears in the same spot as previously looted treasure chest. 
• Occasional NullRef's when decapitating wolves, mountain lions and deer as client on dedicated server 
• Typo with some repair lists using forged iron could not be repaired 

Source: Changelog A20.4 B38