The v1.0.9.4 patch fixes a couple of gameplay issues, adds the Queen and the Exosuit to multiplayer, adds new chat-line commands, makes some multiplayer improvements and fixes a number of bugs.
This patch is also available from the game’s auto-updater.

The Single Player Map Update #1 makes several changes to the single player missions. Please note that saved games made before the update may not work correctly after it is applied. Level progression will be maintained, however, so Sierra recommends completing the mission you’re on before updating your game.

The Multiplayer Map Update #1 adds four new Deathmatch/Team Deathmatch/Hunt/Survivor maps, four new Evac maps and two new Overrun maps. This map update requires the v1.0.9.3 patch.