Solana Schedules the Alpenglow Upgrade
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On October 14, CoinDesk reported that Solana had scheduled the Alpenglow upgrade to launch on October 21, 2026, with the goal of achieving transaction finality in approximately 150 milliseconds, although actual performance depends on network conditions. The upgrade plan will replace off-chain validator voting with TowerBFT and determine block finality through certificates after one to two rounds of voting. On October 15, Cryptopolitan reported that the upgrade was scheduled to go live on mainnet-beta on October 21, replacing TowerBFT with Votor; validators will need to use software based on Agave 4.3.0, and voting fees will change from approximately 1 SOL per epoch to a fixed 0.8 SOL. The report likewise stated that 150 milliseconds is a projected target and that actual performance depends on network conditions.
AI-written from reports · updated 4 days ago
Timeline
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- CryptopolitanSolana plans to launch Alpenglow on October 21, targeting 150ms transaction finality
Solana plans to launch the Alpenglow protocol upgrade on mainnet-beta on October 21, targeting a reduction in the finality of irreversible transactions to approximately 150ms. The upgrade will replace TowerBFT with Votor, validators will need to use software based on Agave 4.3.0, and voting fees will change from approximately 1 SOL per epoch to a fixed 0.8 SOL. 150ms is a projected target, and actual performance will depend on network conditions.
- CoinDeskSolana to launch Alpenglow on October 21, targeting 150-millisecond transaction finality
Solana has scheduled the Alpenglow upgrade for October 21, 2026, targeting transaction finality in approximately 150 milliseconds, though actual performance will depend on network conditions. The upgrade will replace TowerBFT with off-chain validator voting and use certificates to determine block finality after one to two rounds of voting.
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