Replied in Sony in the last publication on one of the frequent questions about Playstation 5 the next and support units own control. We have some good news and some see the bad.
The good news is that all the accessories are compatible with the Playstation 4 like power races and the joystick and aviation will work with games, Playstation 5 and Playstation 4. Support includes controllers PS Move Controllers and the PlayStation VR Aim Controller for games and virtual reality. On the other hand, your controllers to the Playstation 4 will be compatible only with Playstation games, the 4 that are running on the Playstation 5.
In addition, going to be the headphones Sony Gold Wirless Headset and the Sony Gold Wireless Headset along with all the headphones other third party that supports pairing via USB port or 3.5 mm compatible with Playstation 5 but the apps associated with your own won’t work.
Also, at the bottom of the publication, there is a disclaimer saying that it won’t work all the extensions pain-licensed or third-party extensions on the Playstation 5. Suggest Sony to call the police to see if your extensions will work.