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Add Protocol 27 Mainnet section to software versions #22

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Add Protocol 27 Mainnet section to software versions
kaankacar Jul 15, 2026
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Trigger review re-run
kaankacar Jul 15, 2026
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35 changes: 35 additions & 0 deletions docs/networks/software-versions.mdx
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Expand Up @@ -12,6 +12,41 @@ Release candidates are software releases that are also released to the [Testnet]

[testnet]: ./README.mdx

## Protocol 27 (Mainnet, July 9, 2026)

### Software

| Software | Version |
| --- | --- |
| XDR | `v27.0` |
| Rust XDR | `27.0.0` |
| Smart Contract Host Environment | `27.0.0` |
| Stellar Core | `27.1.0` |
| Smart Contract Rust SDK | `27.0.0` |
| Poseidon Rust SDK | `TBD` |
| Stellar CLI | `27.0.0` |
| Stellar RPC | `v27.0.0` |
| Stellar Horizon | `v27.0.0` |
| Stellar Galexie | `TBD` |
| Stellar Quickstart | `TBD` |
| Stellar JS Stellar Base | `v14.0.0` |
| Stellar JS Stellar SDK | `v16.0.0` |
| Stellar Horizon Client & TxnBuild | `TBD` |
| Stellar RPC Client | `TBD` |
| Freighter | |
| Laboratory | `N/A` |
| Futurenet Network Passphrase | `Test SDF Future Network ; October 2022` |
| Testnet Network Passphrase | `Test SDF Network ; September 2015` |
| Mainnet Network Passphrase | `Public Global Stellar Network ; September 2015` |

### Release notes

New features in Zipper, Protocol 27:

- [Release Notes](https://github.com/stellar/stellar-core/releases/tag/v27.0.0)
- [Protocol 27 Upgrade Guide](https://stellar.org/blog/foundation-news/stellar-zipper-protocol-27-upgrade-guide)
- Authentication Delegation and Address-Bound Soroban Credentials: [CAP-71](https://github.com/stellar/stellar-protocol/blob/master/core/cap-0071.md)

## Protocol 27 (Testnet, June 18, 2026)

### Software
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