# Solana Schedules Alpenglow Upgrade for Oct. 21 to Accelerate Transaction Finality

- URL: https://stocks.freetheai.org/news/solana-schedules-alpenglow-upgrade-for-oct-21-to-accelerate-transaction-finality-7c561a
- Published: 2026-10-14T05:00:42Z
- Category: crypto; sentiment: bullish; impact: high
- Symbols: [COINBASE:SOLUSD](https://stocks.freetheai.org/symbols/COINBASE-SOLUSD)
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Solana (COINBASE:SOLUSD) is preparing to launch a major network upgrade named Alpenglow on Oct. 21, designed to cut transaction finality times to about 0.15 seconds (150 milliseconds). The upgrade replaces the blockchain's existing TowerBFT consensus system with a new mechanism where validators exchange approval votes directly with one another rather than recording vote transactions on-chain.

The change aims to significantly speed up how quickly transactions become irreversible. Faster confirmation times will help payment providers and cross-chain bridge services verify transfers faster. Moving voting off-chain also alters network metrics: total transaction counts will appear to drop sharply, reflecting a change in counting methodology rather than a fall in user activity. Additionally, the update replaces the current voting fee of around 1 SOL per epoch with a fixed participation fee of 0.8 SOL.

The rollout will begin during Epoch 1064 at about 3:00 p.m. UTC on Oct. 21, maintaining the current consensus method for 5,000 slots before switching roughly 18 minutes later. Node operators must adopt software based on Agave 4.3.0, requiring temporary client switches for validators using Firedancer or Frankendancer. Solana was last trading at 107.1 USD, up 0.37% today.

## Key points

- Solana will deploy the Alpenglow upgrade on Oct. 21 at approximately 3:00 p.m. UTC during Epoch 1064.
- The upgrade aims to reduce transaction finality times to about 0.15 seconds using a direct validator voting mechanism.
- Removing vote transactions from blocks will lower reported transaction volume metrics without reducing actual user activity.
- Validator voting fees will change from roughly 1 SOL per epoch to a fixed participation fee of 0.8 SOL.
- Validators must temporarily switch to Agave 4.3.0 software, as Firedancer and Frankendancer do not support the initial transition.

## Questions and answers

### When is the Solana Alpenglow upgrade scheduled to launch?

The Alpenglow upgrade is scheduled to begin on Oct. 21 at approximately 3:00 p.m. UTC during Epoch 1064.

### How will the Alpenglow upgrade affect Solana transaction speed?

Alpenglow targets a transaction finality time of about 0.15 seconds by having validators exchange votes directly instead of recording them on-chain.

### Why might Solana transaction counts decrease after the upgrade?

Transaction counts may appear to drop because validator vote transactions will no longer be recorded on-chain, though actual user activity is not declining.