The information about a Linux port has been published in the CDR database
Space Hulk, a turn-based strategy game developed and published by Full Control Studios, has been launched on Steam, for Windows and Mac OS X, and a Linux version is incoming.The game is set in the Warhammer 40,000 universe and it's a game based on the official license from Games Workshop. This is the first Space Hulk game in a very long while and the single-player campaign is based on "Sin of Damnation."
Space Hulk also comes with support for head-to-head multiplayer, in the same way that you would play with a board game partner.
The information about the Linux version is taken from the CDR database and by no means is it completely certain. The CDR Database is a record of data that describes every Steam game and subscription provided by Valve for the Steam service.
Usually, the new entries in the Steam database are first visible in the CDR Database before their official launch.