A PlayStation executive has explicitly stated that "we'll let you know" in regard to PS5 pre-order information. The recent DualSense hands-on video has led to speculation that an optional back buttons adapter will appear down the line. A new fan-made PlayStation 5 UI concept offers AI suggestions and a dark mode theme.
https://www.notebookcheck.net/PS5-news-Sony-says-we-ll-let-you-know-on-pre-orders-DualSense-back-buttons-adapter-seems-inevitable-concept-PlayStation-5-UI-goes-dark.481725.0.html