The game has appeared in the CDR database and the launch date can't be too far offX³: Reunion, one of the most famous space simulations ever made, will be arriving on the Linux platform.
X³: Reunion has been out for some time, but the Linux users haven't got the privilege of playing it, at least as of yet.
According to the developers, X³: Reunion introduces a new 3D engine as well as a new story, new ships and a new gameplay to greatly increase the variety in the X-universe.
The other part of this information 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.