Obviously, as soon as they can announce a launch date, they will. There wouldn't be much reason for them to keep the launch of the game a secret.
The website for the game has been updated as well, with this story description:
After Frances Tuttle, the last direct descendant of infamous Salem witch trial judge John Hathorne, passes away at age 102, his home, the Hathorne House, becomes city property. The mayor is currently in the process of deciding which candidate among our suspects is fit to manage the estate as a new tourist attraction, protected as a National Historic Place and has named Steven Danforth as the judge. On the night of October 21st, Steven’s young son Jason is found locked inside the upstairs library of the Hathorne House, with the room engulfed in flames. The child is rescued by the police, who discover upon entering, that the room is totally locked from the inside! Not only that, but the boy has no memory of who brought him to the room, or how he got in there – only reporting terrible visions of a “vile ghostly woman” with glowing eyes who spoke to him from within the fireplace flames. Earlier that evening, the police were tipped off by locals, who witnessed the boy dancing through the streets as though he was “bewitched.” As a result of her unique appearance and the town’s allegations, Mei Parris finds herself accused of witchcraft.
Sounds like a locked room murder mystery to me!