Sony has clarified how both PS5 and PS4 accessories will work with its next video game console. First, let's get the old DualShock 4 out of the way: it'll work with PS4 games that are backwards compatible on the PS5, but it can't be used for next-gen video games. The reason, Sony explained in a blog post, is that many PS5 games will be using the "new technologies and features" offered by the DualSense controller, such as the adaptive triggers and 'haptic feedback' rumble. If you want an example of this, watch Geoff Keighley's hands-on video with the PS5 exclusive Astro's Playroom.
Official third-party PS4 controllers, such as Razer's Raiju and Nacon's Revolution Pro, should work in a similar fashion to the DualShock 4. Sony also confirmed that licensed "special peripherals," such as steering wheels, fighting sticks and aviation-focused joysticks, can be used with PS5 and backwards compatible PS4 software. Confusingly, though, the company added: "We do not guarantee the operation of all officially licensed products or peripheral devices of other companies. Please check the manufacturer for the compatibility status of PS5 and each game title." The message, in short, is 'they should work, but don't blame us if they don't.'"