NVIDIA decided Linux gamers need a little love on Valentines Day so they put up a small driver release for you.
In comparison to previous drivers, it's not going to make any big headlines. There's no big new features, no new Vulkan extensions or performance improvements. Instead, there's quite an essential bug fix included.
The single change noted in the 510.54 driver release is "Fixed a bug that could cause GPU exceptions when minimizing a fullscreen Vulkan application on certain desktops, such as Plasma.". So if you found Vulkan games and applications causing you some major fuss on Linux with KDE Plasma (as just one example), perhaps this new driver is exactly what you're looking for.
NVIDIA only put up version 510.47.03 about two weeks ago, which gave us Vulkan 1.3 support. That built on top of a previous Beta version, so it was actually quite a big release overall anyway adding new extension support and biggies like Vulkan Dynamic Rendering.