EPIC: Upgrade to v10

[mpoke]

Cosmos Hub Upgrade Epic

v10

Create an issue for each item and mark complete once it has been done.

Communication (during entire lifecycle)

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1. Testnet blog post - target validators on Cosmos Medium
2. Tweet link to testnet upgrade blog - @ cosmohub
3. Testnet upgrade info (discord only)
4. Tweet updates on proposal status - @ cosmohub, link
5. Mainnet blog post - target wider audience on Cosmos Medium, link blog
6. Tweet link to mainnet upgrade blog - @ cosmos @ cosmoshub
7. Link to mainnet upgrade instructions (all channels - Discord, Telegram, Slack)
8. Tweet upgrade countdown during voting period - @ cosmos @ cosmoshub
9. Tweet upgrade success story - @ cosmos @ cosmoshub

Library dependencies

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1. Upgrade to SDK version v0.45.16-ics
2. Upgrade to IBC version v4.4
3. Upgrade to CometBFT version v0.34.28

Testnet

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1. Communication prep
2. Docs: testnets updated with most recent rc
3. Docs: join-testnet
4. Release candidate
5. Create testnet proposal
6. Final Release

Docs

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1. Quickstart in docs/getting-started/quickstart.md docs: Updating the quickstart, joining mainnet & upgrade docs for v10 #2599
2. Join mainnet in docs/hub-tutorials/join-mainnet.md docs: Updating the quickstart, joining mainnet & upgrade docs for v10 #2599
3. Migration docs in docs/migration/ docs: Updating the quickstart, joining mainnet & upgrade docs for v10 #2599
4. Update CHANGELOG.md
5. Post Upgrade: chain-registry.json docs: Update comoshub for v10.0.0 release chain-registry#2250
6. Post Upgrade: Update cosmos mainnet repo docs: Updates for v10 mainnet#170

Mainnet Proposal

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1. Predict block height for target date
2. Create forum post
3. Submit on-chain proposal

Followup release

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1. v10.0.1 patched release for Huckleberry
2. v10.0.2 update with IBC Go v4.4.2Gaia v10.0.2 release #2561 Postponed till wk26