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yesterday

Solana Validators Approve ‘Alpenglow’ Consensus Overhaul Targeting 150ms Finality

The upgrade now moves into implementation as teams prepare a December testnet followed by a Q1 2026 mainnet release.

98% of Solana stakers back Alpenglow – Why SOL rallied, then faced THIS....
Solana set for major overhaul after 98% votes to approve historic 'alpenglow' upgrade
(SOLUSDT)
(Source: Coinglass Volume)

Overview

  • Validators passed SIMD-0326 with 98.27% yes and 52% stake participation, completing the governance phase.
  • Alpenglow replaces Proof-of-History and TowerBFT with Rotor and Votor to pursue near-instant confirmations around 150 milliseconds and greater network efficiency.
  • Voting shifts off-chain with a 1.6 SOL per‑epoch Validator Admission Ticket and leader rewards for aggregating and submitting vote data.
  • The design targets a ‘20+20’ resilience model for safety with up to 20% adversarial stake and liveness with another disjoint 20% offline.
  • Developers aim for testnet by December and mainnet in Q1 2026, while SOL jumped above $200 and some analysts project $215–$250 as contingent forecasts.