A reserve currency (or anchor currency) is a currency which is held in significant quantities by many governments and institutions as part of their foreign exchange reserves. It also tends to be the international pricing currency for products traded on a global market, such as oil, gold, etc. (wikipedia)
I think there's nothing to add to this new except the "ha ha"
I've been writing enough about global economy and how the dollar is fucked up that these news are no surprise to me.