Security updates for the month of March are ready to roll out, at least if you’re on a supported device. As always, these updates are ready to go for Google devices, including the Pixel line and some Nexus phones, and the builds will be available for OEMs to work into their own products soon. Hopefully soon, anyway.
Better security and bug fixes are the primary focus of these updates, but the Pixel 3 is also supposedly getting a few performance enhancements with this update. The phone should boot up faster, the camera should be a little less sluggish, and read/write performance is better across the board, so you should legitimately feel your phone run better after this patch.