The deploy board now has sliders for raid size: 150 to 500 zombies and 10 to 50 scavs. Each slider is labelled as you drag it, so 400 zombies reads HORDE and 50 scavs reads WARBAND.
The number you choose is the number that spawns. The sliders replace the normal squad scaling instead of adding on top of it, so 400 zombies means 400 whether you deploy solo or with four players.
Enemy distribution still follows how the map was designed, so areas meant to have more enemies will still have more at any raid size. Disabled spawners stay disabled.
Hounds are separate from these settings and still scale with squad size.
Raid size in co-op
Whoever deploys first sets the raid size. Everyone else's board becomes read-only and shows the numbers currently in use.
The world is populated once by the host when the first player deploys, so any later player's slider settings cannot affect that raid.
Once the raid ends, the settings open back up and whoever starts the next raid chooses the new size.
Menu
The "How do you want to play?" panel no longer cuts off the bottom line of longer descriptions. Public co-op had the longest description, so it was the most noticeable.
Closing that panel with the X now returns you to the save list instead of starting a solo game.
Backing out of a new game no longer deletes the save you were about to overwrite. The old save is now only cleared once you actually continue.