Ethereum is building toward what many developers are calling its most consequential upgrade since The Merge. Known as Glamsterdam, the upcoming hard fork is targeting a June 2026 launch and promises to reshape three of the most fundamental mechanics of how the network operates: how blocks are built, how transactions are processed, and how much users pay to interact with the blockchain. With ETH currently trading around $1,920 and sentiment firmly in fear territory, the upgrade is arriving at a moment when the Ethereum community needs a catalyst, and Glamsterdam may be the most technically significant one the network has produced in years.
What Came Before Glamsterdam
To understand why this upgrade matters, it helps to know where Ethereum has been. The two previous upgrades, Pectra and Fusaka, which deployed in May and December 2025 respectively, were primarily oriented toward Layer 2 scaling. Glamsterdam uniquely targets the base layer itself, addressing how blocks are built, who builds them, and how the network orders and processes transactions. After two consecutive upgrades focused on making Ethereum’s Layer 2 ecosystem cheaper and faster, developers are now turning their attention back to the foundation. The Ethereum Foundation has adopted a twice-yearly upgrade cadence, and Glamsterdam is the first fork of 2026 in that schedule.
The Three Headline Changes
Glamsterdam introduces parallel transaction processing, on-chain block building, and a projected 78.6% reduction in gas fees across both simple transfers and complex smart contract calls. The gas limit per block is set to rise from 60 million to 200 million, with throughput targeting 10,000 transactions per second, roughly ten times what Ethereum handles today. Those three changes are not independent improvements. They are designed to work together, with each one enabling the next and collectively pushing Ethereum toward a performance ceiling that developers believe can compete with any blockchain currently in production.
Enshrined Proposer-Builder Separation
The most structurally significant change in Glamsterdam is the introduction of Enshrined Proposer-Builder Separation, or ePBS. Ethereum block production currently involves multiple actors: builders create optimised transaction bundles, and validators choose which block to publish. This system emerged alongside MEV, profits generated by ordering transactions strategically. However, it relies heavily on external infrastructure such as Flashbots relays, which introduces centralisation risks and increases validator complexity.
ePBS largely eliminates that reliance on off-chain coordination by moving block construction directly into the protocol. For institutions, Glamsterdam’s significance is less about the fee reduction and more about what auditable block production means in practice. Protocol-enforced block ordering gives compliance and risk teams a legible, rule-bound system they can model and audit. Analysts suggest this institutional angle could become one of Glamsterdam’s most underappreciated long-term effects.
Block-Level Access Lists and Parallel Execution
The second major technical change is the introduction of Block-Level Access Lists, or BALs, through EIP-7928. BALs allow Ethereum to preload state data and execute non-conflicting transactions simultaneously, laying the groundwork for parallel transaction processing. Today, the Ethereum Virtual Machine processes transactions one at a time in a single-threaded sequence. Glamsterdam begins the shift toward a model where independent transactions can be executed at the same time. This change could push Ethereum’s theoretical throughput toward 10,000 transactions per second by the end of 2026, matching Solana’s effective real-world throughput in sustained usage.
Gas Fee Reductions
The third change is the one most users will feel directly. A 78.6% fee reduction should meaningfully increase on-chain activity, as positions that were previously too expensive to manage, including small DeFi allocations, frequent rebalancing, and microtransactions, become economically viable for a far broader range of users. Developers also note that lower fees increase Ethereum’s burn rate through EIP-1559, since more transactions at lower cost produces more total fee burns than fewer transactions at high cost, creating a potentially deflationary dynamic for ETH supply.
What the Timeline Looks Like
Developers are finalising the feature set for the Glamsterdam hard fork, targeted for mid-2026. At the 228th All Core Developers Execution meeting, key discussions included finalising the upgrade’s scope and reviewing specific EIPs. Seven EIPs were rejected to keep the upgrade focused and on schedule, reflecting the technical pragmatism that has characterised Ethereum’s recent development cycle.
Ethereum has a history of delaying major upgrades, with The Merge itself pushed back multiple times. However, the recent on-time delivery of Pectra and Fusaka suggests the Foundation has improved its execution cadence. The tentative June 2026 target could realistically slip to Q3 or Q4, with the Base engineering team having publicly warned that adding Fork-Choice Inclusion Lists alongside ePBS could delay the upgrade beyond 2026. The general consensus among developers is that keeping Glamsterdam’s scope tight is more important than expanding it.
What Comes After: The Hegota Upgrade
Ethereum developers have already confirmed the name Hegota for the network’s second planned 2026 hard fork, which will follow Glamsterdam. The chain now operates on a twice-yearly release cadence. Hegota is tentatively scheduled for H2 2026 and introduces Verkle Trees, which replace Ethereum’s current data structure and cut node storage requirements by approximately 90%. That reduction would enable stateless clients, where new nodes can join the network and begin validating without downloading the full state history, dramatically lowering the barrier to running a full Ethereum node. Together, Glamsterdam and Hegota form what developers describe as Ethereum’s most comprehensive year of infrastructure development since the transition away from proof of work.
What It Means for ETH Price
Historical patterns offer a mixed but relevant picture. Data shows ETH tends to rally 20 to 40% in the six to eight weeks before major network upgrades, a pattern that repeated across the Merge, Shanghai, and Dencun upgrades. With Glamsterdam targeting June 2026, analysts suggest the positioning window is opening now. That said, analysts caution that macro conditions, including elevated oil prices, a strengthening U.S. dollar, and no Federal Reserve rate cuts on the horizon, create headwinds that a protocol upgrade alone cannot override. Standard Chartered has raised its end-2026 ETH price target to $7,500, citing improved infrastructure and growing institutional usage as the primary drivers of that forecast.
For everyday Ethereum users, Glamsterdam’s improvements may not feel dramatic on day one. Infrastructure upgrades of this kind tend to express their value gradually, as developers build applications that take advantage of the new performance ceiling. But the direction is unmistakable. Ethereum is building the base layer it always said it would, and Glamsterdam is the most important step in that build since the network stopped mining.
Disclaimer: This article is for informational purposes only and does not constitute financial, investment, or legal advice. Cryptocurrency markets are highly volatile. Always conduct your own research before making any investment decisions.
