ibc-go v10 release candidate

This is the third release candidate for ibc-go v10.0.0.

Like most unreleased software, it is not recommended to use this in production as it might still have bugs and unexpected behavior.

The changelog and migration docs are not up-to-date yet, but some notable changes from v8 are below:

New versioning scheme for modules

Previously, the modules in the ibc-go repo has been versioned and branched separately from ibc-go. Starting with v10, modules/light-clients/08-wasmwill follow and release together with ibc-go. So the first stable release of both modules will be {MODULE_NAME}/v10.0.0. The callbacks module has been included in ibc-go's own module, and is therefore not a separate module anymore.

You can find releases and notes for those modules separately.

Features

• IBC v2 (https://ibcprotocol.dev/blog/ibc-v2-announcement)

Removal to ease maintenance and attack surface

• Removal of the capabilities module
• Removal of the fee middleware module
• Removal of channel upgradability
• Removed fee middleware
• Removed channel upgradability

Other noteworthy changes

Since the early work started on v10, some important changes also include

• Redaction of ibc-go v9, so that we could also remove ICS20v2 (ics20-2)
• Cleanup of API surface, bringing back multiple functions as deprecated to reduce upgrade burden from v8

modules/light-clients/08-wasm v10 release candidate

This is the third release candidate for modules/light-clients/08-wasm v10.0.0.

The main changes are noted in ibc-go's release notes: https://github.com/cosmos/ibc-go/releases/tag/v10.0.0-rc.3

Special notice for the 08-wasm release are:

Ethereum light client support

While the main Ethereum light client support is implemented as a separate 08-wasm CosmWasm smart contract in the solidity-ibc-eureka repo, there is a new blsverifier querier that enables BLS verification in CosmWasm.

v8.6.1

This release contains a fix to ASA-2025-004

It is recommended to upgrade to this version as soon as possible.

Full Changelog: v8.5.3...v8.6.1

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To learn more about ibc-go versioning, please read our RELEASES.md.

IMPORTANT: Please read the migration guides for any versions of ibc-go that you might be going through when upgrading to this version. For example: if you upgrade from the IBC module contained in the Cosmos SDK 0.42.0 to SDK v0.50.9 and ibc-go v8.5.1, please follow:

1. The migration from SDK 0.41.x or 0.42.x to the IBC module in the ibc-go repository based on the SDK v0.44.x.
2. The migration from ibc-go v1 to v2.
3. The migration from ibc-go v2 to v3.
4. The migration from ibc-go v3 to v4.
5. The migration from ibc-go v4 to v5.
6. The migration from ibc-go v5 to v6.
7. The migration from ibc-go v6 to v7.
8. The migration from ibc-go v7 to v7.1.
9. The migration from ibc-go v7.2 to v7.3.
10. The migration from ibc-go v7 to v8.
11. The migration from ibc-go v8 to v8.1.

v7.9.2

This release contains a fix to ASA-2025-004

It is recommended to upgrade to this version as soon as possible.

Full Changelog: v7.8.0...v7.9.2

---

To learn more about ibc-go versioning, please read our RELEASES.md.

IMPORTANT: Please read the migration guides for any versions of ibc-go that you might be going through when upgrading to this version. For example: if you upgrade from the IBC module contained in the Cosmos SDK 0.42.0 to SDK v0.50.9 and ibc-go v8.5.1, please follow:

1. The migration from SDK 0.41.x or 0.42.x to the IBC module in the ibc-go repository based on the SDK v0.44.x.
2. The migration from ibc-go v1 to v2.
3. The migration from ibc-go v2 to v3.
4. The migration from ibc-go v3 to v4.
5. The migration from ibc-go v4 to v5.
6. The migration from ibc-go v5 to v6.
7. The migration from ibc-go v6 to v7.
8. The migration from ibc-go v7 to v7.1.
9. The migration from ibc-go v7.2 to v7.3.

modules/light-clients/08-wasm/v0.6.0+ibc-go-v10.0-wasmvm-v2.2 beta

Third beta of the 08-wasm light client with ibc-go v10.

This version is only relevant for early integrators as documentation are still missing and bugs are expected.

modules/apps/callbacks/v0.3.0+ibc-go-v10.0 beta

Third beta of the callbacks middleware with ibc-go v10 and Eureka support.

This version is only relevant for early integrators as documentation are still missing and bugs are expected.

modules/light-clients/08-wasm/v0.5.0+ibc-go-v8.4-wasmvm-v1.2

‼️ Please note: This is a state machine breaking change and will require a coordinated upgrade.

The changes in this release:

Dependencies

• #7735 Bump wasmvm to v2.1.4 * (NOTE: This is a state machine breaking dependency update)

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In order to use this release, please follow the steps to import git commit 3f2a900.

Full Changelog: modules/light-clients/08-wasm/v0.4.1+ibc-go-v8.4-wasmvm-v2.0...modules/light-clients/08-wasm/v0.5.0+ibc-go-v8.4-wasmvm-v1.2

modules/light-clients/08-wasm/v0.4.0+ibc-go-v7.4-wasmvm-v1.5

‼️ Please note: This is a state machine breaking change and will require a coordinated upgrade.

The changes in this release:

Dependencies

• #7744 Bump wasmvm to 1.5.6 * (NOTE: This is state machine breaking change)

---

In order to use this release, please follow the steps to import git commit 8392c48.

Full Changelog: modules/light-clients/08-wasm/v0.3.1+ibc-go-v7.4-wasmvm-v1.5...modules/light-clients/08-wasm/v0.4.0+ibc-go-v7.4-wasmvm-v1.5

v8.5.2

We present here a summary of the most relevant changes, please see the v8.5.2 changelog for more details.

Testing

• #7430 Update the block proposer in test chains for each block.

Bug Fixes

• (core/03-connection) #7397 Skip the genesis validation connectionID for localhost client.

v8.5.1

This release fixes a panic that occurred during instantiation of the interchain accounts host keeper when populating the list of all module safe queries and port definitions were not found. The solution implemented is to use the cosmos/gogoproto registry instead of including the entire merged global files registry. Please check the v8.5.1 changelog for more details. Big thanks to @damiannolan for resolving this issue!

---

To learn more about ibc-go versioning, please read our RELEASES.md.

IMPORTANT: Please read the migration guides for any versions of ibc-go that you might be going through when upgrading to this version. For example: if you upgrade from the IBC module contained in the Cosmos SDK 0.42.0 to SDK v0.50.9 and ibc-go v8.5.1, please follow:

1. The migration from SDK 0.41.x or 0.42.x to the IBC module in the ibc-go repository based on the SDK v0.44.x.
2. The migration from ibc-go v1 to v2.
3. The migration from ibc-go v2 to v3.
4. The migration from ibc-go v3 to v4.
5. The migration from ibc-go v4 to v5.
6. The migration from ibc-go v5 to v6.
7. The migration from ibc-go v6 to v7.
8. The migration from ibc-go v7 to v7.1.
9. The migration from ibc-go v7.2 to v7.3.
10. The migration from ibc-go v7 to v8.
11. The migration from ibc-go v8 to v8.1.