Sony Corp. this week released System Software Update v3.15 for the Playstation 4.
System Software Update v3.15 is said to offer improved system performance.
Sony in Jan. said sales of the Playstation 4 have reached 35.9 million units in global markets.
The figure is as of Jan. 3, 2016.
The PS4 hardware sold more than 5.7 million units in the 2015 holiday season. PS4 software sales totaled more than 35 million copies in global retail stores and digital downloads.
Finally, 60 percent more users subscribed to Playstation Plus at the end of 2015.