It was released on July, 27th 2017 as part of the A Lullaby For The Dark Chapter.
Deep in a forest with many names lies a hidden home. The family that once lived there was dependent on the forest... and was broken by it. More than a century old, the dwelling is in surprisingly good condition, though it shows signs of often being patched and mended. The forest holds the house tightly in its grasp, growing over and around it like a second skin. Only once inside is it clear that someone still lives there. It is warm and welcoming and lovingly decorated, with a large living space, a bedroom and a corner dedicated for little ones. Here they are protected from the harsh winter of the northern forest.
The Red Forest is the area surrounding Chernobyl, within the radioactive exclusion zone that was created after the city's power plant melted down. According to the Huntress' background, which wraps up with stating that "German soldiers began to pass through, on the march to attack the collapsing Russian Empire," this is confirmed to be the very same location, with Anna's story taking place before and during World War II. However, The Red Forest didn't acquire its nickname until after the Chernobyl disaster, which resulted in the reddish-brown color of the decayed, surrounding flora. Considering that the meltdown didn't occur until 1986, the game's use of the nickname in direct association with her backstory is an anachronism.