v0.47.0-rc2

Cosmos SDK v0.47.0-rc2 Release Notes

Cosmos SDK `v0.47.0-rc2` contains all the features and changes that are planned for the final v0.47.0 release.

This release candidate is intended to give application developers and validator operators a chance to test the release candidate before the final release.

The main changes in this release are:

• Upgrade to Tendermint v0.37.0 .

• With the notable introduction of ABCI 1.0 .

• Changes of events keys and values from `[]byte` to `string`.

• Support of ABCI 1.0 in the SDK .

• Allows chains to set their own mempool implementation.

• Support of the new `PrepareProposal` and `ProcessProposal` ABCI methods.

• Deprecation of the `x/params` module.

• Modules params are now handled directly by the modules themselves, with the message `MsgUpdateParams`.

• All core modules have migrated away from `x/params`. It is recommended to migrate your custom modules as well.

• Migration from `gogo/protobuf` to `cosmos/gogoproto`.

• The SDK was using the now unmaintained `gogo/protobuf` library. This has been replaced by `cosmos/gogoproto` which is a fork of `gogo/protobuf` with some improvements and fixes, that is maintained by the Cosmos SDK team.

• This change is not transparent for applications developers. All proto files should be regenerated with the new library.

• Please use the `ghcr.io/cosmos/proto-builder` image (version >= `0.11.2`) for generating protobuf files.

• Dependency Injection / App Wiring

• App Wiring is ready for community feedback and testing. It allows to build a chain with less boilerplate by removing the need to manually wire a chain.

• Community feedback will be implemented in the following releases which can lead to API breakage (`runtime` and `depinject` are `pre-1.0`).

• Manually wiring an application is still possible and will always remain supported.

• Removal of the proposer-based rewards from `x/distribution`.

• This removes unfairness towards smaller validators.

• Re-addition of `title` and `summary` fields on group and gov proposals.

• In `v0.46` with `x/gov` v1, these fields were not present (while present in `v1beta1`). After community feedback, they have been added in `x/gov` v1.

• Refactoring of tests in the SDK and addition of the `simtestutil` package , for facilitating testing without depending on simapp.

• Any dependencies on `simapp` in an application must be removed going forward.

Refer to the UPGRADING.md for upgrading your application.

Please see the CHANGELOG for an exhaustive list of changes.

Full Commit History (previous version): release/v0.46.x...release/v0.47.x

Full Commit History (`rc1..rc2`): v0.47.0-rc1...v0.47.0-rc2