Update: https://dirtgame.com/dirt5/news/dirt-5-patch-notes
John seems pleased:
Technical Director for Dirt 5 makes it sound like they worked to give this out before Christmas:
Further general visual and performance improvements across the board, including visual updates to the 'Prioritise Frame Rate'/120hz mode on Xbox Series X
Further FPS improvements when using Image Quality mode on Xbox One and PS4
John seems pleased:
Technical Director for Dirt 5 makes it sound like they worked to give this out before Christmas: