In 2026, when people refer to CentOS, they almost always mean CentOS Stream — the actively developed, community-driven distribution maintained by the CentOS Project with close collaboration from Red Hat engineers. The original CentOS Linux (the stable, point-release rebuild of Red Hat Enterprise Linux / RHEL) no longer exists as an official project.
The shift happened in late 2020 when Red Hat announced the end of CentOS Linux in favor of focusing on CentOS Stream. All CentOS Linux releases have reached End of Life (EOL):
- CentOS Linux 8 → EOL December 2021
- CentOS Linux 7 → Final EOL June 30, 2024
No official updates, patches, or security fixes have been issued since those dates. Any continued “CentOS Linux” support in the market comes from community forks (AlmaLinux, Rocky Linux, etc.), not the original project.
What Is CentOS Stream?
CentOS Stream is a continuously delivered (rolling-style) Linux distribution positioned as the public upstream development branch for Red Hat Enterprise Linux. It sits in the middle of the Fedora → CentOS Stream → RHEL pipeline:
- Fedora Linux → Cutting-edge, rapid six-month releases (upstream innovation hub)
- CentOS Stream → Midstream rolling updates that preview and integrate changes destined for the next RHEL minor or point release
- RHEL → Downstream, fixed-point enterprise release with 10+ years of support, certifications, and paid backing
Packages, security fixes, bug corrections, and new features land in CentOS Stream as they are ready (often weekly), rather than in large batched minor releases every ~6 months. This makes Stream a “preview window” into upcoming RHEL content while allowing community contributions to influence RHEL development before it ships.
Current active branches (as of February 2026):
- CentOS Stream 9 → Supported until May 31, 2027 (aligned with RHEL 9 lifecycle)
- CentOS Stream 10 → Released late 2024; supported until ~2030 (aligned with RHEL 10)
Key Differences: CentOS Linux vs CentOS Stream
| Aspect | CentOS Linux (Legacy) | CentOS Stream (Current) | Impact in 2026 |
|---|---|---|---|
| Position in RHEL Pipeline | Downstream rebuild of current RHEL release | Upstream of RHEL (midstream between Fedora and RHEL) | Stream previews future RHEL changes |
| Release Model | Fixed point releases (e.g., 7.9, 8.5) with batched minor updates every ~6 months | Continuous / rolling updates as packages are ready | More frequent changes, less predictable |
| Update Frequency | Security + bug fixes in point releases | Weekly or as-ready package updates | Faster security patches, but potential for regressions |
| Stability | Extremely high (frozen after release) | Good but inherently less predictable than fixed releases | Suitable for dev/test; cautious for critical prod |
| Binary Compatibility | 100% compatible with matching RHEL version | Binary compatible with RHEL (software built for RHEL runs) | High compatibility retained |
| Support Lifecycle | 10 years per major version (ended for all) | ~5 years per major branch (e.g., Stream 9 to 2027) | Shorter than RHEL but free |
| Community Contribution | Limited (rebuild only) | Active upstream model; community can influence RHEL | Faster feedback loop into enterprise Linux |
| Intended Use | Production servers needing rock-solid stability | Development, testing, CI/CD, RHEL previewing | Not ideal as pure production drop-in replacement |
| Official Status | Discontinued (EOL complete) | Active future of the CentOS Project | “CentOS” now = Stream |
When to Choose CentOS Stream in 2026
Strong fit for:
- Developers and teams wanting early access to upcoming RHEL features
- CI/CD pipelines testing RHEL compatibility
- Environments already using Ansible/Puppet/Chef roles written for RHEL
- Users comfortable with rolling updates and willing to monitor changelogs
- Learning or experimenting with enterprise Linux without cost
Less ideal for:
- Mission-critical production servers requiring maximum predictability and zero surprises
- Legacy applications sensitive to package changes
- Environments that previously relied on CentOS Linux’s fixed-point stability
In those cases, the community strongly recommends free RHEL clones like AlmaLinux or Rocky Linux (both binary-compatible with RHEL point releases and offering long-term stable support).
Bottom Line in 2026
CentOS Linux was a downstream mirror of RHEL — stable, predictable, and free. CentOS Stream is an upstream contributor to RHEL — forward-looking, continuously evolving, and free — but with a trade-off in stability for faster innovation and community input.
The project has fully transitioned: there is no going back to the old model. If you’re starting fresh or migrating, evaluate whether you need pure stability (choose a fork) or want to participate in shaping enterprise Linux’s future (choose Stream).