DayZ update 1.39 was released today by Facepunch Studios for PS4 and Xbox One. You can get the complete patch notes here.
There are a number of new weapons added to the game with this new patch e.g the M79 grenade launcher, Sawed-off Revolver, and Derringer pistol. In addition to this, there are a number of bug fixes implemented in this update as well. You can have a look at the complete set of patch notes with the changelog shared below.