Smart watches and fitness bands are worthless. I have a Mio Fuse...it is a fitness band but it has HR monitor with no chest strap...thats useful... But a watch to wear the mobile in range, a fitness band with useless fake calories etc... But thats only my humble opinion...
So...now demos are called betas and you have to be the chosen one to play. Nothing changed on any of the betas/demos I helped. Diablo 3, Hots, Rainbowsix Siege, etc etc... Let's wait for the open demo then...
Steam OS is just a tool, the true spirit of this "movement" is the DRM free/no Directx thing you can have with every free Linux OS. I'm using windows coz all games are mainly though to work on windows, few are made to work on Linux...I hope this will change with Steam OS.
JoGargos' comments