According to PSU reports, Ubisoft recently confirmed on Twitter that “Far Cry 6” can only run on Xbox One and Xbox Series X in 4K Ultra HD, which means that PS4 Pro and even PS5 will also Cannot run Far Cry 6 in 4K mode.
the relevant news was revealed when Ubisoft officially interacted with players on Twitter. The latter showed a banner advertisement for Far Cry 6 which shows that 4K Ultra HD is only available on Xbox One and Xbox Series Available on X.
Far Cry 6 is scheduled to go live on PS5, PS4, PC, Xbox Series X and Xbox One on February 21st.
Update: Ubisoft has deleted the relevant tweets.