# Release Notes
Source: https://docs.chain.link/crec/release-notes
Last Updated: 2026-09-01

> For the complete documentation index, see [llms.txt](/llms.txt).

<CrecCommon callout="beta" />

## 2026-09-01 — SDK v0.8.0 — DON Configuration, Structured Conflict Errors

**Versions**

- Go SDK: `github.com/smartcontractkit/crec-sdk` **v0.8.0**
- REST API: **0.8.0** (`https://cre-connect.api.chain.link/v1`)

**What's new**

- **DON configuration**: configure event verification for your organisation's DON as one atomic unit (tenant ID, signature threshold, signer set) with the new `WithDONConfig` option. See [SDK Configuration Options](/crec/reference/sdk-configuration).
- **Structured conflict errors**: HTTP `409` responses now carry machine-readable codes, mapped by the SDK to sentinel errors that work with `errors.Is`. See [Error Handling](/crec/reference/error-handling).
- **More precise verification failures**: verification now distinguishes a workflow-owner mismatch from an insufficient signature count, instead of returning a generic error. See [Event Verification](/crec/concepts/event-verification).
- **Optional wallet configuration**: the `configuration` field on wallet creation is now optional.
- **DON signer rotation completed**: the default signer set now counts 10 production signers.

## 2026-08-06 — SDK v0.7.14 — Draft Operations, Chain Queries, Multi-Event Finality

**Versions**

- Go SDK: `github.com/smartcontractkit/crec-sdk` **v0.7.14**
- REST API: **0.7.0** (`https://cre-connect.api.chain.link/v1`)

**What's new since initial release**

- **Draft operations**: create unsigned operations and finalize them later with an external signer. Enables deferred-signing workflows: MPC (Fireblocks, Privy, AWS KMS with approval), human approval gates, preview-before-sign, and cancellation before execution. See [Draft Operations](/crec/concepts/drafts).
- **Chain queries**: submit asynchronous, DON-backed, verifiable EVM `eth_call` reads and receive OCR-signed results with resolved block metadata. See [Chain Queries](/crec/concepts/queries).
- **Multi-event finality**: operations now report progressive on-chain confirmations (`confirmed_latest` → `confirmed_safe` → `confirmed`) as the block matures through finality stages. See [Multi-Event Finality](/crec/concepts/multi-event-finality).
- **RSA local signer**: in-memory RSA signing for development and testing, alongside the existing ECDSA local signer.
- **Structured error codes**: the REST API now returns machine-readable `ApplicationError` with `type` and `code` fields (e.g. `OPERATION_NOT_FINALIZABLE`, `IDEMPOTENCY_KEY_MISMATCH`).

## 2026-05-01 — Initial release

Chainlink CRE Connect is now available as a **private beta**.

**Versions**

- Go SDK: `github.com/smartcontractkit/crec-sdk` **v0.6.7**
- DTA extension: `github.com/smartcontractkit/crec-sdk-ext-dta/v2` **v0.0.13**
- REST API: **0.4.0** (`https://cre-connect.api.chain.link/v1`)

**Capabilities**

- **Verifiable on-chain events**: subscribe to contract events on supported networks; every event is signed by the Chainlink DON and verifiable end-to-end via `client.Events.Verify` (and `client.Events.VerifyOperationStatus` for operation lifecycle events).
- **Gas-less, account-abstracted operations**: sign one EIP-712 payload; CRE Connect executes one or more EVM transactions atomically through your Smart Account, with no gas, nonce, or relayer management on your side.
- **Extensions**: typed Go modules layered on the core SDK. Available at launch: [DTA](/crec/extensions/dta).

**Signer integrations**

Local ECDSA, AWS KMS, HashiCorp Vault, Fireblocks, Privy, and a documented [custom signer interface](/crec/guides/signers/custom).

**Supported networks**

See [Supported Networks](/crec/supported-networks).