I'm surprised nobody has mentioned the next big Linux distributer: Valve.
I had my doubts about how well SteamOS would do, until recently when the Unreal and Cry engines were opened to licensing and both touted SteamOS support as a major current or upcoming feature. People seem to be taking this seriously.
There is an interesting symmetry there: ChromeOS is taking traditional notebook form factor devices away from Windows. Steam OS might do the same for gaming PCs. With the high price of current-generation consoles, people will increasingly ask "Why not a PC?"
I had my doubts about how well SteamOS would do, until recently when the Unreal and Cry engines were opened to licensing and both touted SteamOS support as a major current or upcoming feature. People seem to be taking this seriously.