I can almost guarantee you that a graphics bump for FFXIV will not occur until a majority of systems (Sony and Microsoft 10-based hardware) have graphics cards that support Ray Tracing.

Shadowlands requires (1) specific NVIDIA card drivers (2) May 2020 update for Windows 10 (3) Direct X 12 and, most importantly, (4) a GPU that supports DirectX Ray Tracing Tier 1.1.

My PC has 3 of the 4, and I am not going out and blowing $350 for yet-another-video-card that supports (4).

Items (1), (2), (3) and (4) aren't even available on the console side at this time.