Sony recently filed a patent for what appears to be a cloud-connected controller, similar to Google's Stadia Controller. This could be a controller designed for Sony's PlayStation Now game streaming service. Considering Google's heavy push into game streaming, it makes sense that Sony would be working hard on improving its own game streaming services.
https://www.notebookcheck.net/Sony-files-patent-for-cloud-connected-game-controller.439791.0.html