Sony has revealed that 13.5 million PS4 have been sold since the console's launch last November. Sony also states that there has been a "significant increase in network services revenue related to the introduction of the PS4."
According to Sony, 3.3 million units were sold between July and September 2014. In addition, during this same time period, 800,000 PS3s and 700,000 PS Vitas, PSPs and PlayStation TVs were sold.
Meanwhile, Microsoft hasn't revealed any numbers regarding the sales of the Xbox One since April. At the time, Microsoft revealed that it had shipped 5 million consoles.