Solana’s Alpenglow Upgrade Set for Oct 21: Finality Slashed to 150ms, Vote Tx Out of Blocks

Solana has announced that its Alpenglow upgrade will go live on October 21, replacing the TowerBFT voting system with a new consensus mechanism designed to slash finality from 12.8 seconds to a target of just 150 milliseconds.
By pulling vote transactions out of blocks entirely, the upgrade aims to boost network throughput and reduce latency, positioning Solana for faster DeFi and NFT applications while addressing long‑standing concerns about block congestion.
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