The Biggest Blockchain Upgrades Coming in 2026
Cointelegraph outlines major blockchain protocol upgrades expected in 2H 2026. Ethereum’s “Glamsterdam” is on devnets with a 2H 2026 mainnet target, aiming to improve scalability and validator transparency (ePBS). Solana’s “Alpenglow” targets ~100–150ms finality. Base’s “Beryl” hard fork added a B20 token standard and shortened withdrawal finality to 5 days. Avalanche’s “Octane” focuses on performance and institutional tokenization; Bitcoin’s development is stalled.
How this was made
The 30-second read
Why it matters
It frames upgrades as fundamental improvements (scalability, consensus finality, reliability, institutional infrastructure) and provides some concrete targets (e.g., Solana finality) while largely relying on expected timelines.
Market read
Primarily a forward-looking catalyst calendar for L1s; only Base’s Beryl is a near-term executed event, while others are still under development.
What to watch
The article is roadmap-heavy; traders may be overpricing future execution risk, and Base’s liquidity fragmentation risk is explicitly noted but not quantified.
Background
The piece surveys major blockchain protocol upgrades expected in 2H26 across Ethereum, Solana, Avalanche, and Base, plus a note that Bitcoin development is stalled.
Ticker impact
Article highlights Ethereum’s “Glamsterdam” devnet testing and a second-half 2026 mainnet launch aimed at scalability and ePBS changes.
Moderately positive medium-term bias for ETH as upgrade expectations build into 2H26.
The piece provides concrete upgrade goals (scalability, ePBS) and timing (2H26), but it’s still a forward-looking roadmap rather than a newly executed event.
Solana’s “Alpenglow” consensus upgrade is expected to ship alongside Agave 4.1 later in 2026, targeting faster finality.
Positive medium-term read-through for SOL tied to reduced latency and lighter validator economics.
The article includes specific performance targets (100–150ms finality vs ~12.8s) and a development timeline, but it remains pre-implementation.
Avalanche’s “Octane” push is framed as performance upgrades plus institution-friendly tokenized-asset infrastructure, building on Etna’s sovereign L1 shift.
Slight-to-moderate positive medium-term bias for AVAX as institutional/tokenized-asset narratives strengthen.
The article is more thematic than execution-specific for Octane, and it cites prior Etna success rather than a fresh, dated AVAX catalyst.
Market effects
Read-across to L1 token narratives: reliability, governance predictability, and institutional-grade infrastructure are emphasized over pure price action.
Mentions Hong Kong-based HashKey Group and Japan tokenization examples, but no direct regional policy/flow catalyst.
Institutional capital markets and tokenized securities use cases are positioned as the main demand driver for these protocol upgrades.
Counterpoint
Faster finality and governance mechanics may not translate into sustained token demand if fee markets, liquidity fragmentation, or MEV dynamics worsen post-upgrade.
Key entities
- blockchainEthereum
Glamsterdam upgrade targeting scalability and ePBS changes, with mainnet expected in 2H26.
- blockchainSolana
Alpenglow consensus upgrade expected later in 2026, targeting ~100–150ms finality and removing onchain vote transactions.
- blockchainAvalanche
Octane performance push including Streaming Asynchronous Execution to improve C-Chain throughput/fees.
- blockchainBase
Beryl hard fork went live after a sequencer-related outage; includes B20 token standard and shorter withdrawal finality.
