zarr-developers · d-v-b · Oct 22, 2025 · Oct 22, 2025 · Oct 22, 2025 · Oct 22, 2025
diff --git a/changes/3118.doc.md b/changes/3118.doc.md
diff --git a/changes/3303.doc.md b/changes/3303.doc.md
diff --git a/changes/3366.feature.md b/changes/3366.feature.md
diff --git a/changes/3483.bugfix.md b/changes/3483.bugfix.md
diff --git a/changes/3490.feature.md b/changes/3490.feature.md
diff --git a/changes/3502.doc.md b/changes/3502.doc.md
diff --git a/changes/3515.misc.md b/changes/3515.misc.md
diff --git a/changes/3526.feature.md b/changes/3526.feature.md
diff --git a/changes/3530.bugfix.md b/changes/3530.bugfix.md
diff --git a/changes/3532.misc.md b/changes/3532.misc.md
diff --git a/changes/3535.bugfix.md b/changes/3535.bugfix.md
diff --git a/changes/3536.doc.md b/changes/3536.doc.md
diff --git a/docs/release-notes.md b/docs/release-notes.md
@@ -2,6 +2,34 @@
 
 <!-- towncrier release notes start -->
 
+# zarr 3.1.4 (2025-10-22)
+
+## Features
+
+- Add the `zarr.experimental` module for unstable user-facing features. ([#3490](https://github.com/zarr-developers/zarr-python/issues3490))
+- Add `zarr.experimental.cache_store.CacheStore`, a `Store` that implements caching by combining two other `Store` instances. See the [docs page](https://zarr.readthedocs.io/en/latest/user-guide/experimental#cachestore) for more information about this feature. ([#3366](https://github.com/zarr-developers/zarr-python/issues3366))
+- Increase the default value of `async.concurrency` from 10 to 64 to improve parallelism and throughput for concurrent I/O operations. This change enables better performance out-of-the-box for most workloads. Users with specific resource constraints or when using many Dask threads may want to lower this value via the `ZARR_ASYNC_CONCURRENCY` environment variable or by setting `zarr.config.set({'async.concurrency': N})`. ([#3526](https://github.com/zarr-developers/zarr-python/issues3526))
+
+## Bugfixes
+
+- Fix a bug that prevented `PCodec` from being properly resolved when loading arrays using that compressor. ([#3483](https://github.com/zarr-developers/zarr-python/issues3483))
+- Fix a bug where the `"consolidated_metadata"` key was written to metadata documents even when
+  consolidated metadata was not used, resulting in invalid metadata documents. ([#3535](https://github.com/zarr-developers/zarr-python/issues3535))
+- Fix a bug that prevented Zarr Python from opening Zarr V3 array metadata documents that contained
+  extra keys with permissible values (dicts with a `"must_understand"` key set to `"false"`). ([#3530](https://github.com/zarr-developers/zarr-python/issues3530))
+
+## Improved Documentation
+
+- Use mkdocs-material for Zarr-Python documentation ([#3118](https://github.com/zarr-developers/zarr-python/issues3118))
+- Document different values of StoreLike with examples in the user guide. ([#3303](https://github.com/zarr-developers/zarr-python/issues3303))
+- Reorganize the top-level `examples` directory to give each example its own sub-directory. Adds content to the docs for each example. ([#3502](https://github.com/zarr-developers/zarr-python/issues3502))
+- Update 3.0 Migration Guide to include function signature change to zarr.Array.resize function. ([#3536](https://github.com/zarr-developers/zarr-python/issues3536))
+
+## Misc
+
+- [#3515](https://github.com/zarr-developers/zarr-python/issues3515)
+- [#3532](https://github.com/zarr-developers/zarr-python/issues3532)
+
 # zarr 3.1.3 (2025-09-18)
 
 ## Features