It might be Intel trying to impose their Light Peak format. They already decided to postpone USB3 in their motherboards in favor of Light Peak. Maybe the sweet

It might be Intel trying to impose their Light Peak format. They already decided to postpone USB3 in their motherboards in favor of Light Peak. Maybe the sweetheart deal with Apple over being the first ones to implement this tech included a "let's not do USB3 too fast, shall we?" clause.