The protocol is a moving target.
Canonical improvement documents, watched upgrades, client releases, operational incidents, and official announcements—organized as a living development radar.
SIMD-0525 · Shorter slot times
A proposal to reduce target slot duration and increase network cadence.
Alpenglow migration
The staged path for moving the network from Tower BFT to Alpenglow.
Alpenglow consensus
A redesigned Solana consensus protocol targeting lower latency and simpler finality.
Agave, shipping.
Release metadata comes directly from the current Anza Agave repository. RC and alpha tags remain visually explicit.
Release v4.3.0-alpha.3
This is a pre-release for testing only. Do not deploy to mainnet, testnet, or any production host.
Release v4.2.0-rc.1
This is Mainnet-beta Upgrade Candidate release recommended for 10% adoption.
Release v4.2.0-rc.0
This is Mainnet-beta Upgrade Candidate release recommended for 10% adoption.
Release v4.3.0-alpha.2
This is a pre-release for testing only. Do not deploy to mainnet, testnet, or any production host.
Release v4.2.0-beta.2
This is a testnet release.
re-amend SIMD-0340: additional inter- and intra- validation (#551)
2026-07-31 · proposed
SIMD-0433: Loader V3: Set Program Data to ELF Length (#433)
2026-07-31 · proposed
SIMD-0550: Double disinflation (#550)
2026-07-23 · proposed
SIMD-0553: Resource and Inclusion Fee (#553)
2026-07-20 · proposed
SIMD-0392: Clarify included stake accounts and calculations (#572)
2026-07-16 · proposed
SIMD-0290: narrow scope to blockhash tx (#574)
2026-07-16 · proposed