# Ethereum Merge Progress: Kiln Spec Release and Client Diversity Concerns

DevFeed: [Ethereum Merge Progress: Kiln Spec Release and Client Diversity Concerns](<https://devfeed.tech/articles/finalized-no-33-17001.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2022/01/31/finalized-no-33>)

Author: Danny Ryan

Published: 2022-01-31T00:00:00Z

Content type: article

Language: en

Sources: [Ethereum Foundation Blog](<https://devfeed.tech/sources/ethereum-foundation-blog.md>)

Topics: [Ethereum](<https://devfeed.tech/topics/ethereum.md>), [Network](<https://devfeed.tech/topics/network.md>), [bug](<https://devfeed.tech/topics/bug.md>), [Resilience](<https://devfeed.tech/topics/resilience.md>), [Software](<https://devfeed.tech/topics/software.md>), [client](<https://devfeed.tech/topics/client.md>)

Tags: [bug](<https://devfeed.tech/tags/bug.md>), [distribution](<https://devfeed.tech/tags/distribution.md>), [ethereum](<https://devfeed.tech/tags/ethereum.md>), [load](<https://devfeed.tech/tags/load.md>), [network](<https://devfeed.tech/tags/network.md>), [research-development](<https://devfeed.tech/tags/research-development.md>), [resilience](<https://devfeed.tech/tags/resilience.md>), [software](<https://devfeed.tech/tags/software.md>), [sync](<https://devfeed.tech/tags/sync.md>)

## AI overview

This update reports progress on the Ethereum Merge, including the launch of the Kintsugi Merge testnet, a breaking engine API specification update, and the release of the Kiln specification. It also says client diversity among validating nodes had not improved over the previous six months and explains how minority-client adoption supports network resilience.

## Source excerpt

tl;dr Merge progress -- minor spec updates, engineering full steam ahead 🚂 No progress in client diversity. Be selfish, run a minority client!...