Until then, fans can only wait for the return of the Rage Virus.

This represents audio format config. The "5.1" syntax denotes a six-channel surround sound system architecture:

Deliver off-screen footsteps, rustling leaves, and the sudden screeches of the infected right behind your head.

: Standing for Dolby Digital Plus 5.1 audio, this format supports six discrete channels of sound (Left, Center, Right, Left Surround, Right Surround, and Low-Frequency Effects for the subwoofer). This format ensures an immersive surround sound experience during intense action sequences.