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Automated RELEASES.md sync update #303

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Jul 29, 2026
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Automated RELEASES.md sync update #303

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25 changes: 13 additions & 12 deletions content/releases.md
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Expand Up @@ -603,18 +603,19 @@ against total impact.
The deprecated features are shown in the following table:

| Component | Deprecation release | Target release for removal | Recommendation |
|----------------------------------------------------------------------------------|---------------------|---------------------------------------|------------------------------------------|
| Runtime V1 API and implementation (`io.containerd.runtime.v1.linux`) | containerd v1.4 | containerd v2.0 ✅ | Use `io.containerd.runc.v2` |
| Runc V1 implementation of Runtime V2 (`io.containerd.runc.v1`) | containerd v1.4 | containerd v2.0 ✅ | Use `io.containerd.runc.v2` |
| Built-in `aufs` snapshotter | containerd v1.5 | containerd v2.0 ✅ | Use `overlayfs` snapshotter |
| Container label `containerd.io/restart.logpath` | containerd v1.5 | containerd v2.0 ✅ | Use `containerd.io/restart.loguri` label |
| `cri-containerd-*.tar.gz` release bundles | containerd v1.6 | containerd v2.0 ✅ | Use `containerd-*.tar.gz` bundles |
| Pulling Schema 1 images (`application/vnd.docker.distribution.manifest.v1+prettyjws`) | containerd v1.7 | containerd v2.1 (Disabled in v2.0) ✅ | Use Schema 2 or OCI images |
| CRI `v1alpha2` | containerd v1.7 | containerd v2.0 ✅ | Use CRI `v1` |
| Legacy CRI implementation of podsandbox support | containerd v2.0 | containerd v2.0 ✅ | |
| Go-Plugin library (`*.so`) as containerd runtime plugin | containerd v2.0 | containerd v2.1 ✅ | Use external plugins (proxy or binary) |
| NRI v0.1.0 plugin support | containerd v2.2 | containerd v2.3 | Use the v010-adapter NRI plugin, or update v0.1.0 plugins to use the current NRI API |
| cgroup v1 support | containerd v2.2 | (May 2029) | Use cgroup v2 |
|----------------------------------------------------------------------------------|---------------------|---------------------------------------|------------------------------------------------------------------------------------------------|
| Runtime V1 API and implementation (`io.containerd.runtime.v1.linux`) | containerd v1.4 | containerd v2.0 ✅ | Use `io.containerd.runc.v2` |
| Runc V1 implementation of Runtime V2 (`io.containerd.runc.v1`) | containerd v1.4 | containerd v2.0 ✅ | Use `io.containerd.runc.v2` |
| Built-in `aufs` snapshotter | containerd v1.5 | containerd v2.0 ✅ | Use `overlayfs` snapshotter |
| Container label `containerd.io/restart.logpath` | containerd v1.5 | containerd v2.0 ✅ | Use `containerd.io/restart.loguri` label |
| `cri-containerd-*.tar.gz` release bundles | containerd v1.6 | containerd v2.0 ✅ | Use `containerd-*.tar.gz` bundles |
| Pulling Schema 1 images (`application/vnd.docker.distribution.manifest.v1+prettyjws`) | containerd v1.7 | containerd v2.1 (Disabled in v2.0) ✅ | Use Schema 2 or OCI images |
| CRI `v1alpha2` | containerd v1.7 | containerd v2.0 ✅ | Use CRI `v1` |
| Legacy CRI implementation of podsandbox support | containerd v2.0 | containerd v2.0 ✅ | |
| Go-Plugin library (`*.so`) as containerd runtime plugin | containerd v2.0 | containerd v2.1 ✅ | Use external plugins (proxy or binary) |
| NRI v0.1.0 plugin support | containerd v2.2 | containerd v2.3 | Use the v010-adapter NRI plugin, or update v0.1.0 plugins to use the current NRI API |
| cgroup v1 support | containerd v2.2 | (May 2029) | Use cgroup v2 |
| Restoring checkpoint data during CRI `CreateContainer` | containerd v2.3 | containerd v2.4 | Follow [KEP-5823](https://github.com/kubernetes/enhancements/issues/5823) for a replacement `RestorePod` API |

- Pulling Schema 1 images has been disabled in containerd v2.0, but it still can be enabled by setting an environment variable `CONTAINERD_ENABLE_DEPRECATED_PULL_SCHEMA_1_IMAGE=1`
until containerd v2.1. `ctr` users have to specify `--local` too (e.g., `ctr images pull --local`). Users of CRI clients (such as Kubernetes and `crictl`) have to specify this environment variable on the containerd daemon (usually in the systemd unit).
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