The main change is that Pearl Abyss has added correct support for Intel Arc video cards. The game no longer suffers from strange visual artifacts on these GPUs.
The Arc's performance was shown in the video, but the implementation of XeSS remains weak - the image looks blurry, and the performance leaves much to be desired.
With patch 1.03, the graphics were partially improved: the lighting became more stable, especially indoors. However, noise during ray tracing is still noticeable. To reduce them, you have to turn on Ray Reconstruction, an option with a serious hit to FPS.
DLSS 4.5 upscaling now works better - at the start it was almost useless due to strong flickering, but it is still inferior to DLSS 4.0. According to Hardware Unboxed, the best option is to run the game in native resolution, as upscaling blurs textures.
Hardware Unboxed YouTube channel