# Kintsugi testnet and Arrow Glacier upgrade advance Ethereum Merge preparations

DevFeed: [Kintsugi testnet and Arrow Glacier upgrade advance Ethereum Merge preparations](<https://devfeed.tech/articles/finalized-no-32-16990.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2021/11/22/finalized-no-32>)

Author: Danny Ryan

Published: 2021-11-22T00:00:00Z

Content type: news

Language: en

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

Topics: [Ethereum](<https://devfeed.tech/topics/ethereum.md>), [releases](<https://devfeed.tech/topics/releases.md>), [Testing](<https://devfeed.tech/topics/testing.md>), [client](<https://devfeed.tech/topics/client.md>), [Software](<https://devfeed.tech/topics/software.md>)

Tags: [ethereum](<https://devfeed.tech/tags/ethereum.md>), [launch](<https://devfeed.tech/tags/launch.md>), [merge](<https://devfeed.tech/tags/merge.md>), [node](<https://devfeed.tech/tags/node.md>), [releases](<https://devfeed.tech/tags/releases.md>), [research-development](<https://devfeed.tech/tags/research-development.md>), [tests](<https://devfeed.tech/tags/tests.md>), [upgrade](<https://devfeed.tech/tags/upgrade.md>)

## AI overview

The article reports progress on the Kintsugi Merge sprint, including plans for a persistent multi-client testnet and ongoing client implementation, testing, and interoperability work. It also explains that validators must upgrade their PoW node for the Arrow Glacier difficulty-bomb delay.

## Source excerpt

tl;dr Kintsugi🍵 in progress -- testnet to come Stakers must upgrade for Arrow Glacier...