Yeah, from the article:
"The 12-watt charger (or its 10-watt predecessor) could charge the iPad mini more quickly than the 5-watt adapter, provided that the iPad mini itself would allow more than 5 watts to be drawn from the charger."
We don't know that bolded part yet. If a design constraint was that the Mini can only handle a 5 watt draw, than it would be foolish to ship the 12w charger now wouldn't it? Additionally, if they DID ship the 12 watt charger and it only handled 5watts, we'd have people in here complaining that Apple charged them for a "more expensive" charger that they didn't need
Let's let the facts settle before we complain
too loudly, aye?