Quick thread if you are out of the loop regarding the content already put online by Focus Home Interactive for the game. I'll try to keep it updated until release.
Videos (note that you can find HD uncompressed versions of many videos on gamersyde.com, a free account is required to download them)
- E3 2015 concept teaser
- E3 2016 trailer
- E3 & Gamescom 2016 pre-alpha demo
- The Darkness Within trailer
- E3 2017 trailer
- E3 2017 gameplay demo (alpha)
- DONTNOD Presents Vampyr (making-of webseries):
· Teaser trailer
· Episode I "Making Monsters"
· Episode II "Architects of the Obscure"
· Episode III "Human After All"
· Episode IV "Stories From the Dark" - Story trailer
- Becoming the Monster
Regarding the E3 2017 Gameplay Demo video, you can also find meatier videos on YouTube such as the Twitch panel video but they won't feature @cromwelp commenting on the gameplay 
Screenshots (Click on the image to access the full album)
Concept Arts (Click on the image to access the full album)
Feel free to comment if something's missing!
Edit 03.05.2018: Gameplay Trailer ("Becoming the Monster") added.
