NVIDIA today just released a big new stable driver for Linux with 450.57. It pulls in a whole bunch of big features from the recent 450.51 Beta.
Compared with the Beta, it looks like it's mostly the same plus a few extra fixes. However, it's worth a reminder now it's stable because everyone should be able to upgrade knowing it's a supported driver version. NVIDIA 450.57 is exciting for a few reasons. One of which is the inclusion of support for NVIDIA NGX, which brings things like DLSS to their Linux drivers.
There's also now Image Sharpening support for OpenGL and Vulkan, support for Vulkan direct-to-display on DisplayPort displays which are connected via DisplayPort Multi-Stream Transport (DP-MST), various VDPAU improvements, PRIME enhancements like support for PRIME Synchronization when using displays driven by the x86-video-amdgpu driver as PRIME display offload sinks along with "Reverse PRIME" support too.
On the bug fix side, one of the big ones is that is should be a smoother Wayland experience as NVIDIA fixed a bug that could cause a KDE Plasma session to crash when running under Wayland. They also fixed a bug that prevented X11 EGL displays from being reinitialized. Another KDE issue was also solved, as after some investigation the NVIDIA team found that KDE panels freezing when compositing was disabled was a problem in their driver so that was fixed too.
See the release notes here.