The information was published in the CDR database
Ricochet, a little know action Half-Life mod developed and published by Valve, will arrive on Steam for Linux, soon.Valve promised to publish on Steam for Linux their entire catalogue but most people have forgotten than it includes more than Counter-Strike and Half-Life games.
According to the developer, Ricochet is a futuristic action game that challenges the player’s agility as well as their aim. The game is all about one-on-one and team matches, played in a variety of futuristic battle arenas.
The other part of this information, about the Linux port, 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.