Back 4 Blood has been updated to version 1.06 today by Turtle Rock Studios. You can learn more about this update including patch notes here.
The developers have released a massive update today for the game. On the forefront is the ability to play through the game with a streamer mode so there is no issue with a copyright strike. Other changes include multiple bug fixes and improvements to the general gameplay. Take a look at the complete patch notes below, or have a go at the official website.