Portainer 3.0 will no longer support its free Community Edition, which will remain frozen on version 2.45 LTS. The company cites maintenance challenges from supporting multiple platforms simultaneously and says 3.x's enterprise-focused architecture doesn't align with open-source principles. Users can stay on 2.x with security patches or move to paid tiers for new features.
Portainer 3.0 is shifting focus toward Kubernetes because Docker Engine lacks enterprise-level security primitives like fine-grained authorization and multi-tenant isolation, despite innovations in BuildKit and runtime packaging. Docker's API model grants root-level access with no way to scope permissions, making it unsuitable for secure multi-tenant datacenter deployments, while Kubernetes and alternatives like Podman offer better enterprise capabilities.