The Linux port was hinted at a while ago and the CDR database has confirmed it
Brütal Legend, a game developed by the legendary Double Fine Productions studio, will be launched on Steam for Linux.Brütal Legend is an action-adventure game set in an open world. The main character of the game is Eddie Riggs, and its voice by none other than Jack Black.
According to the developers, players will follow Eddie as he embarks on a tour of epic destruction with an axe, a guitar, and his minions.
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.