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The PlayStation 4 (abbreviated as PS4) is a home video game console developed by Sony Computer Entertainment. Announced as the successor to the PlayStation 3 during a press conference on February 20, 2013, it was launched on November 15 in North America, November 29 in Europe, South America and Australia, and February 22, 2014 in Japan. It competes with Nintendo's Wii U and Microsoft's Xbox One, as part of the eighth generation of video game consoles.

On September 7, 2016, Sony unveiled two hardware revisions of PlayStation 4; a slim build of the console, and a "Pro" version with an upgraded GPU and higher CPU clock rate to support 4K gameplay on supported titles.

As of December 2018, more than 91.6 million PS4 consoles have been sold worldwide.

Source: Wikipedia.