Microsoft has defaulted to direct payments for music and movies, putting the future of the in-house points currency into the questionable domain.
If the Zune Marketplace is any indicator, it would seem that MS has shifted from Points to using regular human currency for transacting downloads of songs and movies purchased via Windows 8. The point system by Microsoft has always been somewhat controversial because the conversion was sort of convoluted. 80 points cost $1, and they could only be purchased in 400 point blocks, not giving the user much flexibility. There was also the problem that many felt the points were deceptive in nature, making the user spend more on content than it would cost in normal currency.