"2013-12-13Z"^^ . "SteamOS"@en . "SteamOS is a Debian-based Linux operating system in development by Valve Corporation designed to be the primary operating system for the Steam Machine game consoles. It was initially released on December 13, 2013, alongside the start of end-user beta testing of Steam Machines."@en . "Under development" . "1.59" . . .