Solana is about to get significantly faster. The network’s upcoming Alpenglow upgrade, targeting a mainnet launch in the third quarter of 2026, promises to reduce transaction finality times from roughly 12.8 seconds down to 100-150 milliseconds.
Solana co-founder Anatoly Yakovenko confirmed in May 2026 that mainnet deployment is on track for Q3 2026, following successful testing on a community test cluster. The upgrade has been in the works since at least September 2025, when governance proposal SIMD-0326 passed with 98.27% approval from stakeholders, with roughly 52% of all staked tokens participating in the vote.
What Alpenglow actually changes
The upgrade, led by Anza, an engineering team focused on Solana’s core infrastructure, replaces two of Solana’s most fundamental consensus mechanisms. Out go Proof of History and Tower Byzantine Fault Tolerance, the original technical pillars of the network. In their place come two new systems called Votor and Rotor.
One of the most consequential changes is the removal of on-chain vote transactions. Under the current system, validators continuously broadcast votes to the network as a form of consensus signaling. Those votes consume meaningful network resources. Eliminating them simplifies the network’s processing load and frees up capacity for actual user transactions.
