Alpenglow Could Reduce Solana Finality to Sub‑150ms After Validator Approval, Possibly Launching in 2026

Alpenglow is Solana’s protocol rewrite (SIMD‑0326) that replaces PoH and TowerBFT with Votor and Rotor, cutting transaction finality to sub‑150ms and improving validator efficiency and attack resilience. Validators approved activation