> For the complete documentation index, see [llms.txt](https://docs.zama.org/protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zama.org/protocol/sdk/changelog/v3.md).

# 3.x (current)

Human-readable release notes for the 3.x line — what changed in each minor version of @zama-fhe/sdk and @zama-fhe/react-sdk, in plain language.

Plain-language release notes for the `3.x` line — the current, actively-maintained release line. Here's what changed in each minor version, and why it matters. This complements the auto-generated [`CHANGELOG.md`](https://github.com/zama-ai/sdk/blob/main/CHANGELOG.md) (the full commit-level list) and the [migration guide](/protocol/sdk/migration/migrate-v2-to-v3.md) (for moving across a major version).

## Versions

* [**3.6.x**](/protocol/sdk/changelog/v3/v3-6.md) — Web Worker encryption offload, structured wallet-signing/permit-failure events, an interrupted-unshield resume fix, and orphaned relayer entries that warn instead of throwing.
* [**3.5.x**](/protocol/sdk/changelog/v3/v3-5.md) — Polygon presets, offline signing and decryption permits, at-rest transport-key encryption, and automatic KMS-context recovery.
* [**3.4.x**](/protocol/sdk/changelog/v3/v3-4.md) — An internal FHE backend migration to `@fhevm/sdk` (no API changes for `Token`/hooks apps), FHE runtime and client tuning knobs, shared transport key pairs for B2B2C, automatic decrypt-batch chunking, and a two-signature shield via `wrap()`.
* [**3.3.x**](/protocol/sdk/changelog/v3/v3-3.md) — `confidentialTransferAndCall`, automatic pending-unshield recovery, and typed decryption errors.
* [**3.2.x**](/protocol/sdk/changelog/v3/v3-2.md) — configurable, silent-by-default logging; upgrade codemods; and a `Wrap` event decoding fix.
* [**3.1.x**](/protocol/sdk/changelog/v3/v3-1.md) — `createConfig`, transport factories, the provider/signer split, the `Token` / `WrappedToken` hierarchy, and top-level FHE primitives.
* [**3.0.x**](/protocol/sdk/changelog/v3/v3-0.md) — the first stable v3 line: the high-level clear-text-in, clear-text-out SDK, plus upgraded wrapper and registry contract support.


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