Push where? - Sony has filed a patent for an updated DualShock controller, which will potentially be the design that ships
PS5 controller shown in patent images. : r/Games
DualShock 4 Back Button Attachment review: small but perfectly formed
Sony PS4 DUALSHOCK 4 Back Button Attachment, PlayStation 4
Official Sony DualShock 4 Back Button Attachment [ NOT a Controller ] NEW 711719533597
Where Are The DualSense Back Buttons?
PS5 DualSense Controller May Be Getting Back Button Attachment
DualShock - Wikipedia
First PS5 controller feature goes on sale next week and PS4 fans will love it - Daily Star
Step up your game with two additional, mappable buttons for your DualShock 4 wireless controller with the DualShock 4 Back Button Attachment. Get the edge in your favourite games with two ergonomically designed rear buttons.
Sony DualShock 4 Back Button Controller Attachment (ps4)