by the end of 2013. Valve clarified that although they conducted some initial exploratory work with Xi3, they have had no direct involvement with the Piston's specifications, and it was not necessarily representative of the final design for the Steam Box.

Valve officially revealed Steam Machines including the related SteamOS and Steam Controller during the last week of September 2013, with a tentative release date in mid-2014. On December 13, 2013, three hundred beta units of the Steam Machine were shipped