Two sets of driver releases for you recently, with Mesa 19.1 now officially out as quite a big upgrade and a minor NVIDIA driver change.
First up, NVIDIA 430.26 is out as an update to their stable long-lived driver series. It adds support for various Quadro GPUs, as well as fixing a bug in 415.13, that caused audio over DisplayPort to not work in some configurations.
The bigger one is for AMD/Intel with Mesa 19.1 being officially released today. As usual, the Mesa team note that since it's brand new you might want to wait for Mesa 19.1.1 to have a fully stable experience.
See the official Mesa release notes here, however their documents aren't designed for your average human to parse as they're always just a list of various extensions and Vulkan/OpenGL features that made it in. I do hope they eventually work on something a little more readable for releases. You should expect new hardware support, performance improvements, bug fixes and so on.