Here are the new features of this update:
New Army:

• New Allied Army
  • Has been added to Front Defense: Heroes as a new playable army

• Avatars
  • New avatars have been added

    Desert Shield

    

    Sly Hunter

    

    Agkistrodon Kiss

    

    Night Fox

    

    Queen Spike

    

• New badges will be added for the army and maps
  

Weapons:

• New Rifle
  • Lee-Enfield No. 4 Mk. I
  • Type99

• New SMG
  • STEN
  • M3
  • PPSh-41
  • FG42

• New Pistol
  • M1917

• New Sniper Rifle
  • Lee-Enfield No. 4 Mk. I (T)
  • Type97

• LMGs have been added to the game
  • Bren
  • MG42
  • Type96
  • 1919A4
  • M1918

• Weapon are now classified by their categories
  
• Players can now purchase additional guns through the store and weapon skins
  

Maps:

• New Map - Rock Port
  • Will support Team Deathmatch, Attack and Defend, and FFA

• New Map - Urban Warfare
  • Will support Team Deathmatch, and FFA

• New map - Primary Refinery
  • Will support Team Deathmatch, and Attack and Defend

• New map - Secondary Refinery
  • Will support Team Deathmatch

Store System:

• Points can now be earned through battles, ranks and earning badges

  • Because of the new game system for in-game purchase, compensation and bonus will be issued for old players.

• Players may use the points to redeem guns, gun skins, and avatars

  

• The amount of points that can be earned per day will be capped resetting at midnight 0:00 PST
  
• There will be point multipliers sessions throughout the day
  There will be four multipliers sessions in a day :

  GMT 01:00 ( USA, west 19:00 ) GMT 08:00 ( USA, west 00:00 ) GMT 12:00 ( USA, west 04:00 ) GMT 20:00 ( USA, west 12:00 ) In multipliers session, players can get extra 50% points.

Game Modes:

• Training Firing Range
  • Players can try all weapons and skins in the firing range
  • Store is accessible from firing range

Game Settings:

• Voice settings
  • The Lobby host can now change the chat between teamchat and all chat
    • Free for all rooms will always be set to all chat