AWS has launched Amazon Linux 2027 in public preview, upgrading to kernel 7.1 and switching SELinux to enforcing mode as the default. This shift means applications that previously operated under AL2023's permissive policy will likely fail to start or function correctly. The announcement provides no specific dates for general availability or end-of-support for AL2023, nor does it outline an in-place migration strategy.
- AL2027 defaults to SELinux enforcing, unlike AL2023's permissive stance.
- Apps relying on permissive policies will break immediately upon migration.
- Kernel is upgraded to version 7.1 in this new preview release.
- No GA date, EOL date, or in-place migration path has been announced.
- Test workloads against AL2027 now to identify SELinux compliance gaps.