That is what is being reported as a possibility for an RD line of cars. This is not officially confirmed but reports state that the Golf will get the RD treatment and and a pair of twin-scroll turbochargers will give the 2.0 liter EA288 diesel motor a big bump over the GTD.
What the horsepower figure will rise to is anyone's guess at this point although clearly it will not rival the Golf R in raw power. The GTD currently has 180 horses so a bump into the ~250 horse range is certainly a possibility. This would also be a tuner's dream.
Do not get too excited as even if this comes the chances of it making it to the United States are slim. Which is a shame, because this is the exact kind of thing we need from VW.