What the heck is Starbucks' new coffee "Fragrance White"?

Today, I walked into Starbucks next door to Wei's newsroom and found a new kind of coffee called Flat White. All the salespeople are promoting it vigorously, and they can taste it for free. After ordering a cup, I found that the label left by the clerk on the side of the cup was FW, which was a bit like asking Forward to fast forward to the future. The only thing that is a bit unsettling is that Flat White's Chinese name has been translated into