"SteamBoy won't be as powerful as other announced Steam Machines in the same way [the] Nintendo 3DS or PS Vita performance is not comparable to Wii U or PlayStation 4," said the company. "However, it will be possible to play the majority of current games in Steam."
The device itself looks like a Steam Controller and is relatively similar to the rival Vita.
So far, there are little details but here is the teaser trailer and some pics:












