Solana Alpenglow and Ethereum Glamsterdam upgrades target October 2026
Image: Crypto.newsSolana's Alpenglow upgrade activated on testnet in late September 2026, with mainnet targeted for October 2026 and no confirmed activation date. The upgrade aims to cut Solana's transaction finality from 12.8 seconds to 100, 150 milliseconds. Ethereum's Glamsterdam hard fork activated on the Sepolia testnet on October 6 2026, with mainnet targeted for Q4 2026. Glamsterdam raises Ethereum's single-block gas limit from 60 million to 200 million, leaving its 12 minute 48 second finality unchanged. Solana ETFs recorded $800,000 in inflows last week, down from $188.1 million the prior week.
Key points
- Alpenglow is Solana's largest protocol upgrade since launch, testnet activated in late September 2026
- Alpenglow's mainnet launch is targeted for October 2026 with no confirmed activation date
- Alpenglow replaces Solana's existing TowerBFT consensus system
Why it matters
Alpenglow's planned finality reduction could improve Solana transaction settlement speed for users and developers. Glamsterdam's Sepolia testnet activation will generate data on Ethereum's 200 million gas block capacity ahead of its Q4 2026 mainnet launch.
What's unclear
Alpenglow has no confirmed mainnet activation date or block height
Glamsterdam's 200 million gas benchmark performance under mainnet validator conditions is unconfirmed
Price context · SOL
At publication
$120.56
Now
$120.52
Change since
−0.03%
7 days · dashed line = publication
Sources · 2 publishers
Coinpedia
Tier 3
Ethereum Glamsterdam vs Solana Alpenglow: October 2026 Protocol Comparison
Coverage timeline
- First reported by Crypto.news
- Confirmed by Coinpedia
- CryptoVideos brief published
How this brief was made. Our system found this event in 2 independent publications, summarised two complete reports with AI and checked every number above against the source text. Sources are linked in full. Not financial advice. Report an error
