Zeek 4.0.0 is now available:
This is a Long-Term Support (LTS) release, receiving critical
bug-fixes and security patches for the next year. The previous LTS
branch of Zeek 3.0.x may still receive any important security patches
for the next two months, but won't be maintained afterward.
General info about this release can be found in the release notes as
well as a previous blog post from the release-candidate phase: