This was confirmed few days ago, when it was reported that Valve was hiring hardware developers.
It is uncertain if the company is developing a whole new console or just experimenting on new PC accessories like gamepads.Quote:
“We’re frustrated by the lack of innovation in the computer hardware space though, so we’re jumping in.Even basic input, the keyboard and mouse, haven’t really changed in any meaningful way over the years. There’s a real void in the marketplace, and opportunities to create compelling user experiences are being overlooked.”
Valve is yet to release the details of the project.