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3.5.0

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•Last updated Oct 9, 2026

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fix(metadata): validate codec chains against the threaded chunk spec
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#4352 opened Sep 14, 2026 · Updated Sep 21, 2026
10
Statically-typed configuration object (donfig retained as the config reader)
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#4101 opened Jun 25, 2026 · Updated Sep 16, 2026
17
Add Store.get_many bulk fetch API
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#4112 opened Jul 1, 2026 · Updated Sep 16, 2026Draft
4
fix(metadata)!: require int chunk sizes of at least 1 in metadata constructors and chunk specifications
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#4431 opened Sep 26, 2026 · Updated Oct 1, 2026Draft
2
feat(array): add Array.dimension_names property
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#4401 opened Sep 24, 2026 · Updated Sep 29, 2026
7
feat(attributes): warn when writing attributes that are not valid JSON
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#4400 opened Sep 24, 2026 · Updated Oct 10, 2026
3
feat: open arrays and groups with a Context
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#4388 opened Sep 23, 2026 · Updated Sep 27, 2026
1
Make ObjectStore backend generic over any obspec store
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#3698 opened Feb 9, 2026 · Updated Oct 18, 2026
12
fix(api): accept create keyword arguments when zarr.array copies a zarr array
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#4419 opened Sep 26, 2026 · Updated Sep 29, 2026Draft
1
fix: honor use_consolidated_for_children, merge async attribute updates, cancel timed-out sync coroutines
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#4343 opened Sep 12, 2026 · Updated Sep 29, 2026Draft
1
feat(codecs): deprecate the host-byte-order default of BytesCodec on big-endian hosts
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#4439 opened Sep 27, 2026 · Updated Sep 29, 2026Draft
1
feat(testing): add a testing extra and make zarr.testing importable without it
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#4403 opened Sep 24, 2026 · Updated Oct 13, 2026
3
feat: URL pipeline core — URLPipeline, adapters, registry, zarr.open_url
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#4192 opened Jul 28, 2026 · Updated Oct 18, 2026
27
feat: Bytes partial decode
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#4458 opened Sep 30, 2026 · Updated Oct 15, 2026
10