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 v4.4.0-alpha.5
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Release v4.3.0
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Release v4.3.0-rc.1
This is Mainnet-beta Upgrade Candidate release recommended for 25% adoption.
Release v4.4.0-alpha.4
This is a pre-release for testing only. Do not deploy to mainnet, testnet, or any production host.
Release v4.3.0-rc.0
This is Mainnet-beta Upgrade Candidate release recommended for 10% adoption.
SIMD-0582: Early detection of instruction trace overflow (#582)
2026-09-16 · proposed
SIMD-0377: fix JMP32 register opcodes, JSGE32 condition and callx opcode (#639)
2026-09-15 · proposed
SIMD-0609: Prohibit Vote Account Self-Withdrawals (#609)
2026-09-15 · proposed
SIMD-0610: Prohibit Nonce Account Self-Withdrawals (#610)
2026-09-15 · proposed
SIMD-0558 - Leader Info Syscall (#621)
2026-09-09 · proposed
SIMD-0608: `DeactivateDelinquent` for Closed Vote Accounts (#608)
2026-09-08 · proposed