On May 16th, we will have the release candidate for Humble Hawksbill. This means that on May 16th, we’ll have the final update to the core ROS 2 packages before the official Humble release on May 23rd - so be sure to get any fixes in before then!
We’ll also have the Humble distro freeze starting on May 19th, which is the last chance to get packages into Humble before the release. But don’t worry, if you miss that date: new packages can be released into Humble after the official release day on May 23rd.
You can find more info on the Humble release timeline here: ROS 2 Humble Hawksbill (codename ‘humble’; May, 2022) — ROS 2 Documentation: Humble documentation.