In February, Sony revealed that it had sold 5.3 million PlayStation 4 video game consoles worldwide. Just last month, Sony yet again reported PlayStation 4 sales numbers, noting that it had sold six million on a global scale. Now, Sony has announced that since the next-generation console's launch it has sold a total of seven million PlayStation 4 game consoles worldwide as of April 6, 2014. Sony also revealed that software sales for the PlayStation 4 were impressive, with 20.5 million copies being sold through the PlayStation Store and retail locations around the world.
Source: PlayStation Blog