BREAKING: Solana Sets October 21 for Biggest Upgrade Ever — Alpenglow Targets 150-Millisecond Finality as SOL Holds Near $107
Solana has set October 21 for its biggest upgrade ever. The Alpenglow upgrade will go live on mainnet-beta at about 14:50 UTC, after 18 months of work, and it targets transaction finality of just 150 milliseconds — down from about 12.8 seconds today, roughly 85 times faster.
The upgrade replaces Solana's old TowerBFT consensus with a new system called Votor. Instead of recording validator votes as normal transactions, validators will now message each other directly, so blocks can be finalized in just one or two voting rounds. That also frees up block space for regular users and should lower validator costs.
The news comes while SOL is under pressure. The token traded near $107 on October 14, down about 9% over the past seven days, with a market value of around $63 billion. Solana ETFs also saw about $1 million in net outflows on October 13, showing institutions are cautious ahead of the launch.
Traders are also watching a large sale. On-chain trackers reported that a Solana treasury firm recently sold 1 million SOL worth about $107 million — half of its holdings — while keeping another 1 million SOL. That sale adds selling pressure and leaves open the question of whether more tokens could be sold later.
For traders, faster finality could be a real advantage for payments, trading apps and bridges that need quick, final settlement. But this is also Solana's biggest consensus change since launch, so execution risk is high — any delay or problem on October 21 could hurt sentiment, while a smooth launch could rebuild confidence after a weak week for the price.
This post is news only, not financial advice. Always do your own research before buying or selling crypto.
Sources: CoinDesk, Crypto.news, CoinGape, Cointime

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