Solana sets Oct. 21 for Alpenglow upgrade targeting 150-millisecond finality

60-second summary
Solana schedules the Alpenglow upgrade for October 21, aiming to achieve 150‑millisecond finality by overhauling its validator voting system and eliminating vote transactions from blocks. The change will likely reduce headline transaction counts despite steady user activity, prompting analysts to adjust on‑chain metrics while investors anticipate faster, more efficient network performance.
The switch will replace Solana’s existing validator voting system, remove vote transactions from blocks and could sharply change headline transaction counts even if user activity stays flat.