Bandai Namco has announced that Code Vein will have a network test before launch. This will allow people to try out the game. Sign-ups for the network test are already live in Bandai Namco's website. Code Vein is releasing on Xbox One, PS4, and PC, but the network test for the game is only going live for consoles.
Code Vein Network Test Sign Ups Now Available - GS News Update
You can sign up for the Code Vein Network Test on Bandai Namco's website