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chore: prepare v0.50.0 release notes and changelog (#18191)
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| # Cosmos SDK v0.50.0-rc.1 Release Notes | ||
| # Cosmos SDK v0.50.0 Release Notes | ||
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| There are no release notes for pre-releases. | ||
| ✨ [**Official Release Announcenment**](https://blog.cosmos.network) | ||
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| Please see the [CHANGELOG](https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/CHANGELOG.md) for an exhaustive list of changes. | ||
| Refer to the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/UPGRADING.md) for upgrading your application. | ||
| 💬 [**Release Discussion**](https://github.com/cosmos/community) | ||
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| Full Commit History: https://github.com/cosmos/cosmos-sdk/compare/release/v0.47.x...release/v0.50.x | ||
| ## 🚀 Highlights | ||
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| ## Upgrading from v0.50.0-rc.0 | ||
| Cosmos SDK v0.50 is a major release that includes a number of significant new features and improvements. These new features and improvements will make Cosmos SDK applications more performant, scalable, and secure. They will also make it easier for developers to create and integrate new modules into the Cosmos SDK ecosystem. | ||
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| If you have started integrating with v0.50.0-rc.0, this release candidate contains one breaking change. | ||
| This is contrary to our usual policy of not introducing breaking changes in release candidates, but we believe this change is necessary to ensure a smooth upgrade from previous SDK version to v0.50.0. Additionally, it gives a better UX for users integrating vote extensions. Read more about the change [here](https://github.com/cosmos/cosmos-sdk/blob/main/docs/architecture/adr-068-preblock.md). | ||
| * **ABCI 2.0 Integration:** Cosmos SDK v0.50 upgrades to CometBFT v0.38 and fully implements ABCI 2.0. | ||
| * **Optimistic Execution:** Cosmos SDK v0.50 introduces Optimistic Execution, which allows transactions to be executed and committed without waiting for confirmation from all validators. This can significantly improve the performance of chains with a high volume of transactions. | ||
| * **Modular SDK modules:** Cosmos SDK v0.50 starts to extract core modules away from the SDK. These are separately versioned and follow their own release cadence. | ||
| * **IAVL v1:** Cosmos SDK v0.50 upgrades the IAVL tree implementation to v1, which provides a number of performance and security improvements. | ||
| * **AutoCLI:** Cosmos SDK v0.50 introduces AutoCLI, a library that makes it easier to create CLI commands for SDK applications. | ||
| * **Sign Mode Textual:** Cosmos SDK v0.50 introduces a new sign mode that for hardware devices, as replacement of Amino JSON. | ||
| * **Less boilerplate:** Cosmos SDK v0.50 requires less boilerplate in general for modules code and applications. Be sure to read the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/UPGRADING.md) to take advantage of these improvements. | ||
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| Update your app.go / app_config.go as instructed in the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/UPGRADING.md#set-preblocker). | ||
| ### ABCI 2.0 | ||
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| Additionally, if you were using `baseapp.SetPreFinalizeBlockHook` in v0.50.0-rc.0, you should now use `baseapp.SetPreBlocker` for having the same functionality. | ||
| Cosmos SDK v0.50 upgrades CometBFT to CometBFT [v0.38.0](https://github.com/cometbft/cometbft/blob/v0.38.0/CHANGELOG.md) and integrates [ABCI 2.0](https://github.com/cometbft/cometbft/tree/v0.38.0/spec/abci) semantics. Modules still follow ABCI 1.0 sementics (`BeginBlock`, `EndBlock`). | ||
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| For instance, applications can now support [Vote Extensions](https://docs.cosmos.network/v0.50/build/building-apps/vote-extensions). | ||
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| ### Optimistic Execution | ||
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| Cosmos SDK v0.50 introduces Optimistic Execution, which allows transactions to be executed and committed without waiting for confirmation from all validators. This can significantly improve the performance of chains with a high volume of transactions. | ||
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| Optimic Execution leverages ABCI 2.0, and is disabled by default. To enable it add `baseapp.SetOptimisticExecution()` to your baseapp options in your `app.go`. | ||
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| ### SDK modules | ||
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| Cosmos SDK v0.50 starts to extract core modules away from the SDK. These are separately versioned and follow their own release cadence. | ||
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| It starts with `x/evidence`, `x/feegrant`, `x/nft`, and `x/upgrade`, | ||
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| Additionally, SDK v0.50 introduces a new core module, `x/circuit` that provides a circuit breaker for the SDK. Read more about it in the [module documentation](https://docs.cosmos.network/v0.50/build/modules/circuit). | ||
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| Lastly, `x/capability` module has moved to the [IBC repo](https://github.com/cosmos/ibc-go) and is now maintained by the IBC team. | ||
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| The further decoupling of other core modules is planned for the next release. | ||
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| ### Store v1 and IAVL v1 | ||
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| Cosmos SDK v0.50 has decoupled its store from the SDK. The store is now versionned separately and follows its own release cadence. | ||
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| Store v1 upgrades the IAVL tree implementation to v1. IAVL v1 provides a number of performance improvements. | ||
| Read more about it in the [IAVL repo](https://github.com/cosmos/iavl/releases/tag/v1.0.0). | ||
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| ### AutoCLI | ||
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| Cosmos SDK v0.50 introduces AutoCLI, a library that makes it easier to create CLI commands for SDK applications. | ||
| Forget the boilerplate that was required to create CLI commands for SDK applications. AutoCLI will generate CLI commands for you. | ||
| Read more about it in the [AutoCLI docs](https://docs.cosmos.network/v0.50/learn/advanced/autocli) | ||
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| ### Sign Mode Textual | ||
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| Cosmos SDK v0.50 introduces a new sign mode mainly for hardware wallets, as replacement of Amino JSON. | ||
| Never leak again that you are signing from a Ledger device and sign with Sign Mode Textual everywhere. | ||
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| ### Less Boilerplate | ||
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| Cosmos SDK v0.50 requires less boilerplate in general for modules code and applications. | ||
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| Here's a sneak peak of what you can expect: | ||
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| Next to module CLI code that can be removed thanks to AutoCLI, modules do not need to implement `ValidateBasic()`, or `GetSigners` anymore. | ||
| The checks can happen directly in the message server, and the signers can be retrieved from the message itself (thanks to a protobuf annoation). | ||
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| Be sure to [annotate your proto messages properly](https://docs.cosmos.network/v0.50/build/building-modules/protobuf-annotations) to take advantage of those improvements. | ||
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| Read the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/UPGRADING.md) for a more exhaustive list of changes. | ||
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| ## 📝 Changelog | ||
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| Check out the [changelog](https://github.com/cosmos/cosmos-sdk/blob/v0.50.0/CHANGELOG.md) for an exhaustive list of changes or [compare changes](https://github.com/cosmos/cosmos-sdk/compare/release/v0.47.x...v0.50.0) from last release. | ||
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| Refer to the [upgrading guide](https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/UPGRADING.md) when migrating from `v0.47.x` to `v0.50.0`. | ||
| Note, that the next SDK release, v0.51.0, will not include `x/params` migration, when migrating from < v0.47.0, v0.50.0 **or** v0.47.0, is a mandatory migration. | ||
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| ## ❤️ Contributors | ||
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| * Binary Builders ([@binary_builders](https://twitter.com/binary_builders)) | ||
| * Crypto.com ([@cronos_chain](https://twitter.com/cronos_chain)) | ||
| * Orijtech ([@orijtech](https://twitter.com/orijtech)) | ||
| * VitWit ([@vitwit_](https://twitter.com/vitwit_)) | ||
| * Zondax ([@\_zondax\_](https://twitter.com/_zondax_) | ||
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| This list is non exhaustive and ordered alphabetically. | ||
| Thank you to everyone who contributed to this release! |
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