Xbox One will "likely" power up faster than your TV when booting from standby mode, Microsoft has claimed.
Clarifying the console's three power states on Reddit, Xbox director of product planning Albert Penello stated that "On is On. Off is Off. Standby allows "Xbox On", quick resume, checking for updates, etc.
"[Standby] is the mode we'd like to see people in, obviously, so you get back to gaming or watching TV really quick. From standby, it's likely the Xbox will be on before the TV is completely powered up."
Standby mode will let users quickly power up their console by saying 'Xbox On' and automatically download software updates while the user is away.
However, it isn't yet known how much power Xbox One will require while in Standby mode or how long the console will take to boot after being fully powered off.
Xbox One launches on November 22.