Valve has been talking about their Steam OS platform since 2013, we discussed it at length here. At CES 2014, it was the talk of the town, with many OEMs promising to release Steam Machines (defined as gaming PCs designed for living room use running Steam OS and utilizing the as yet unreleased Steam Controller) within the coming months after CES.

Later in 2014, it turned out that Valve had not yet finalized its controller design nor had it finished the Steam OS; as of the time of this writing, Steam OS is still in beta. Many system builders opted to release their systems as regular gaming PCs designed for living room use, and they opted to run Windows and include Steam with Big Picture mode enabled, along with a bundled Xbox 360 controller.

However, despite silence from Valve over the recent months, it has been confirmed by multiple sources that Steam Machines will have an official launch at GDC (the Game Developers Conference) in early March of 2015. The Steam Controller design has been finalized, and Steam OS is apparently ready to come out of beta. Multiple PC boutique builders are already ready to launch a variety of products designed from the ground up as Steam Machines.

What this means for Microsoft is that they’ll have some new competition to face when Windows 10 comes out later this year. Valve is working quickly to bring games to Linux systems such as Steam OS, and PC builders might opt to go for Steam OS for gaming focused PCs in order to save money by not having to purchase a Windows license.

This is also an issue for Microsoft on the hardware front, as many of the Steam Machines will aim for a $500 price point, designed to compete with the Sony PS4 and Microsoft Xbox One.

Whether Valve will be successful in pushing Steam Machines is yet to be determined, but while everyone expected 2014 to be the year of Steam Machines and Steam OS, it obviously didn’t happen, but 2015 is now confirmed.

We don’t have any details yet on the finalized Steam Controller design, but we’ll update this article as soon as we do (although it might unfortunately not be until official release at GDC).