Lots of new content added in 1.5.12!

General

• New challenges
• UI updates
• Updated some animations
• Updated Outpost and Estate
• Improved round system for Demolition and Headquarters games

Melee Weapons

• Added new inventory melee weapons
  
  • Using Aggression perk will also apply to inventory melee weapon damage
• Added character melee weapons
  • Character melee weapons are only cosmetic but can be customized

Multiplayer

• Bots will rejoin Ground War games when a player quits
• Players with ping over 10,000ms will be kicked
• Optimizations to reduce network latency

Survival

• Fat Zombies can now carry machetes
• Infestors have improved resistance against melee weapons

Sandbox

• Added melee zombie