Valve has begun testing for the announced PlayStation DualShock 4 controller support in Steam. The feature is now available in the beta test version of Steam, and introduces the same configuration support as the Steam Controller.
This essentially means that players will be able to use the DS4 controller for their PC games; but also introduces a few features that unavailable to the more popular Xbox controller. The touch surface on the DS4 also enables it to access features originally designed for the Steam controller.
Valve had originally revealed plans to support the DS4 controller at a developer conference, although it was expected to take a little longer for the feature to appear. As it stands, it is difficult to say if the DS4 option will entice PC gamers to give up their preferred controller.
Interestingly, Sony Interactive Entertainment has also announced official third party licensed controllers from Razer and Nacon. These controllers should also work with Steam once they are released; which only increases the number of options available.
The DS4 support option is currently only available for the beta test version of Steam. Those who want to give the feature a try can switch their clients to this test version in the options.
[Source: Steam Community]