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

Solana's Alpenglow upgrade activates on Oct. 21, 2026, according to Anza. The upgrade is expected to make finality roughly 99% faster, marking a major consensus overhaul. Anza, a Solana-focused R&D firm, announced the schedule earlier this week, with developers and Solana documentation confirming the performance boost.