In a blog post, Sony suggests remapping the buttons to actions like triangle, circle, R1 or R2, suggesting the accessory could make it easier to pull off complicated moves in certain games. It could also help players with less dexterity.
Sony doesn’t confirm if the Back Button Attachment is compatible with third party controllers but given the ergonomics and fit specifically to the port on the DualShock 4, it will be
The accessory goes on sale in Europe on 14th February for €29.99, with a UK price to be confirmed. The US and Canada get it earlier on 23 January for $29.99 / CAD$39.99.