A new month means new Android security updates, and the May 2020 builds are starting to roll out today.
Google's Android security bulletin says that this update includes patches for vulnerabilities related to the framework, media framework, and system. The Pixel update also includes security patches for vulnerabilities related to the kernel components, Qualcomm components, and Qualcomm closed-source components.
Google normally lists the functional patches that are included in its monthly Pixel updates, but there aren't any listed yet.
If you've got one of the Pixel phones listed above, be on the lookout for your OTA update in the coming days or jump into your Settings app and conduct a manual check!