See : Hitman Game Developers Refer To Detect A New Part

Two hours before now, the official account of Hitman on Twitter has written a strange, strange tweak that some have suggested is a hint to reveal a new part of the series very soon.

As you see above, clear and explicit evidence that it is a hint, and it is mentioned that the team that will develop the new part will be the same who worked on the previous parts of the series Io Interactive in particular and that this team has gained independence and will also publish his games By yourself, your expectations!