Solana’s Alpenglow Upgrade Arrives Oct. 21 With a Major Speed Boost

Earlier this week, the Solana-focused research and development firm Anza revealed that Solana’s highly anticipated upgrade Alpenglow is scheduled to activate on Wednesday, Oct. 21, 2026. According to developers and Solana documentation, Alpenglow is expected to make finality roughly 99% faster. “It’s time,” Anza wrote on the social media platform X . “Alpenglow goes live on mainnet-beta Wednesday, October 21, ~14:50 UTC. 18 months of work for a migration that happens in one slot. Finality drops from seconds to ~150ms.” Bitcoin.com News reported on the upgrade in March, explaining how Alpenglow will be Solana’s largest consensus redesign. At press time, the chain takes around 12.8 seconds to finalize a transaction, known as “finality” in blockchain spaces.

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