This thread will serve as a video database, when you find a new video regarding the new Hitman game, post it here. This way we can create a easy overview of released content.
Hitman CG trailer released during the Sony E3 Conference (2015)
Gameplay Trailer released during the Square-Enix Conference (2015)
IGN Gameplay and Interview with Hakan (2015)
Hitman Sony Conference Reactions - IGN Live with Christian Elverdam (2015)
Gamespot Stage Demo: Hitman with Hakan (2015)
Playstation E3 Interview with Hannes Seifert (2015)
Polygon Hitman E3 Interview with Hakan (2015)
PC Game Show Interview with Hakan (2015)
Square-Enix Presents skip to 3:40 (2015)
Hitman: Why we Want to Play on Day One IGN (2015)
Videogamer HITMAN Gameplay trailer reactions (2015)
Ginx Hitman - Interview with Hannes Seifert (2015)
Playstation Access Interview with Hannes Seifert (2015)
Interview with Hannes Seiftert in German (2015)
Here is a translated summary of the german interview. There are some sound issues in the video, so I picked the important parts out of the interview:
"The fascination of the Hitman franchise is, that it's the only game where you can live the fantasy to be a professional hitman and where you have the free possibilities to play how you want. Nowadays there are not many games that offer these possibilities, but we do and we try to bring it back better than ever."
"We are fascinated when we look how players play our game on YouTube, Twitch or even on shared videos in the Hitmanforum. It is very inspiring because it is a game which boosts your creativity and that's why we call it a 'creative-stealth-action-game'."
"At every location you can choose your playstyle without any pressure. You can walk around, observe, listen and learn. It isn't a game which pushes you from trigger to trigger."
"The Story of the new game is independent from Absolutions story."
"Diana is back. You get specific informations from her. The informations that you get from her are written down in a log where you can read them again. There is an 'opportunity system' which shows you possibilities. It doesn't say what you have to do but it shows 'Look there is a reporter with her cameraman and they are talking about an interview with the target'."
"We have a savegame again so you are able to experiment free again."
"We don't have a multiplayer where you fight against each other. We don't have the right idea for it."
"We tried something new 2 weeks ago. We had a fan-event with our best and biggest fans which are at once our biggest critics. They saw the Paris level, they played it for hours and we were positively surprised. As a developer you just see the problems and challenges. And than there are people telling you that you kept the promises you made back in 2014, that's something what feels really good."
Translation is done by @iSsueS
Hitman - Director Interview with Hakan (2015)