Metro Exodus will be available in a fully ray traced version called the Metro Exodus PC Enhanced Edition on May 6, which will take advantage of ray tracing and DLSS capabilities of NVIDIA RTX cards. Though 4A Games said that the title wouldn't support AMD's FidelityFX Super Resolution (FSR), the developer later clarified that it actually meant the FidelityFX toolkit and not FSR as such.
https://www.notebookcheck.net/Metro-Exodus-PC-Enhanced-Edition-will-not-support-AMD-FidelityFX-4A-Games-clarifies-on-FidelityFX-Super-Resolution-support.536490.0.html