Ethereum Glamsterdam Upgrade: A Foundational Overhaul Reshaping Mainnet Block Production Logic

Overview

The Ethereum community is closely tracking the next hard fork, codenamed Glamsterdam, as it touches not surface-level experiences but the underlying mechanisms of how the mainnet builds, prices, and validates blocks. According to the official Ethereum roadmap page, the core goal of this upgrade is to re-scale the first layer (L1) by restructuring transaction processing methods and database management logic, paving the way for higher-throughput parallel processing. Multiple development teams have described it as the most significant protocol change since The Merge in 2022.

For the market, Glamsterdam's significance lies in a narrative shift: past upgrades delegated scaling responsibilities to Layer 2 and rollups, but this time, Ethereum is refocusing attention back onto the mainnet itself. This shift directly impacts ETH's value capture logic, thereby attracting the collective attention of investors, validators, and protocol developers.

Key Points

Glamsterdam combines the consensus layer upgrade Gloas and the execution layer upgrade Amsterdam, both launching simultaneously as a single network upgrade.

Two headline proposals lock in the direction: EIP-7732 (enshrined Proposer-Builder Separation, ePBS) and EIP-7928 (Block-level Access Lists, BALs).

Accompanying gas repricing aims to align fees for different operations more closely with their actual resource costs.

The Ethereum Foundation has set a target minimum of 200 million Gas Limit post-upgrade, a more than threefold increase from the current ~60 million.

The upgrade timeline has shifted from an initial target of H1 2026 to Q3, with some teams internally referencing a late August target.

Regular ETH holders do not need to take any action; validators and node operators must update their consensus and execution layer clients before mainnet activation.

What Happened: A Deeper Restructuring than Fusaka

Glamsterdam's Naming and Positioning

Ethereum traditionally names hard forks by combining a "star name + Devconnect host city." Glamsterdam is a portmanteau of Gloas (referring to the consensus layer, named after a star) and Amsterdam (referring to the execution layer, named after the city). This naming structure itself indicates the dual-layer nature of the upgrade: it alters both the consensus and execution layers simultaneously, not just a single-point optimization.

According to Datawallet's technical breakdown, the Fusaka upgrade, launched in December 2025, expanded data availability for rollups via PeerDAS. In contrast, Glamsterdam is more fundamental—it rewrites how Ethereum builds, prices, and validates blocks.

In the Final Stages of Development

According to a CoinDesk report, development teams entered the final development stage in June 2026, running multi-client devnets containing all planned EIPs. This is the last step before the code is finalized and deployed to public testnets. Ethereum Foundation core developer Parithosh Jayanthi described it as the largest fork since The Merge, stating it will change many existing assumptions about Ethereum.

Why the Market is Reacting: ePBS and Parallel Execution

EIP-7732: Bringing Block Building In-Protocol

Currently, about 80-90% of Ethereum blocks are not built by the validators proposing them but are outsourced to professional builders via off-chain relays like MEV-Boost. This system works efficiently but introduces trusted intermediaries into the core block production process and concentrates power among a few relays.

The enshrined Proposer-Builder Separation (ePBS) defined in EIP-7732 codifies this relationship into the protocol itself, replacing trust in external relays with on-chain bids, commitments, and payments. According to Ethereum's official documentation, this mechanism also extends the data propagation window from about 2 seconds to roughly 9 seconds, thereby clearing a major hurdle for the mainnet to safely accommodate higher throughput. This is also the most challenging part of the entire upgrade—splitting block production into two sequentially cooperating roles requires the protocol to handle scenarios where either party fails to deliver or acts inconsistently.

EIP-7928: Block-Level Access Lists and Parallel Processing

Ethereum currently processes transactions sequentially, one by one, within a block because no node knows which accounts and storage slots a transaction will touch until it is executed. This serial bottleneck limits the amount of computation a single block can safely accommodate.

Block-Level Access Lists (BALs) attach a "pre-map" to each block, pre-declaring the accounts and storage keys that its transactions will access, as well as post-execution state values. With this map, clients can pre-fetch state in parallel and process non-conflicting transactions simultaneously, without needing to replay them sequentially. According to Everstake's analysis, this creates the prerequisites for parallel execution and a higher block gas limit. To track real-time price changes of ETH and major assets, you can check the market page on MEXC.

Key Data and Announcements

200 Million Gas Limit and Throughput Target

According to a CoinMarketCap report, the Ethereum Foundation has confirmed the upgrade's delay to Q3 2026 and set a target minimum of 200 million Gas Limit—a significant leap from the current ~60 million, which the Foundation considers "a credible post-upgrade target." Several industry analyses point to a theoretical peak throughput of around 10,000 transactions per second post-upgrade, though it's crucial to emphasize this is a theoretical upper bound under highly optimized conditions, not a steady-state result achievable on day one.

The Real Meaning of Gas Repricing

The accompanying gas repricing scheme (related proposals include EIP-8037, EIP-7904) is not simply about "across-the-board fee reductions." Its logic is to more accurately measure the immediate computational power a transaction consumes and the long-term storage burden it imposes on the network, then aligning fees for different operations more closely with their actual physical costs. According to KuCoin's interpretation, for average users, the result is more likely to point toward potential fee reductions and greater stability, rather than all transactions immediately becoming cheaper.

Timeline

According to IG's technical assessment, the upgrade was initially targeted for June 2026. It was postponed after the Soldøgn interoperability devnet concluded on May 2nd. It is currently projected for Q3 (with some teams referencing late August as a base case), with no specific block height confirmed. The meta-proposal EIP-7773, used to coordinate the upgrade scope, is still in Draft status, meaning the direction is set but details are not yet fully solidified. Activation on public testnets (like Sepolia and Hoodi) is seen as the clearest leading indicator of mainnet readiness.

What This Means for Investors

For the vast majority of token holders, Glamsterdam requires no action—wallet addresses, balances, and front-end interfaces remain unaffected. According to Ethereum's official advice, any instruction asking you to "upgrade your ETH" is a scam. Those who need to act are validators and node operators, who must update their consensus and execution layer clients before mainnet activation and adapt to the new attestation duties introduced by EIP-7732.

At the market structure level, according to Figment's analysis for institutional stakers, the upgrade will also improve exit liquidity for large staking positions—exit queues that might otherwise take weeks to clear under high demand could be processed within days post-upgrade, representing a substantial operational risk mitigation for institutional operators.

From a supply dynamics perspective, on-chain data cited by IG shows that approximately 475,000 ETH flowed out of major exchanges between June 4th and 7th, 2026, constituting a noteworthy accumulation signal. Additionally, roughly 30% of the circulating ETH supply is locked in staking, structurally constricting sell-side availability. It's important to note that past performance is not indicative of future results.

What to Watch Next

The most immediate leading indicator is the progress on public testnets. According to Everstake, the activation of Sepolia and Hoodi, and their stability over multiple epochs, are key windows for judging the mainnet timeline. Additionally, the performance of gas repricing under near-real mainnet loads, and whether clients achieve cross-client parity, are core variables to track.

On a longer time horizon, the upgrade following Glamsterdam, codenamed Hegotá, will introduce FOCIL (Fork Choice-Enforced Inclusion List) for censorship resistance, and potentially Verkle Trees, which could drastically reduce node storage requirements. FOCIL was excluded from Glamsterdam precisely to avoid excessive untested interactions between it and ePBS within the same upgrade.

Potential Risks

The primary risk stems from the timeline. According to Everstake's assessment, three factors could push activation to Q4 2026 or later: the implementation complexity of ePBS (currently the main bottleneck for testnet readiness), feature parity across clients, and validation of gas repricing under realistic scale loads.

Another is the "buy the rumor, sell the news" effect. According to IG, historical data suggests ETH often appreciates leading up to major upgrades and dips 10-15% in the days following activation, as early-positioned capital takes profits. More fundamentally, Glamsterdam itself cannot fully resolve the structural debate over L2s "cannibalizing" mainnet value—the structural argument around ETH's value capture will still need to be answered by subsequent upgrades and real usage data.

Users looking to track ETH market conditions and study structural changes during the upgrade window can view real-time spot and derivatives data on MEXC.

Exclusive Insights from the MEXC Crypto Pulse Research Team

The truly important aspect of Glamsterdam is not the often-cited performance figure of "10,000 transactions per second," but the directional pivot it represents in Ethereum's scaling narrative—from "delegating throughput to rollups" back to "scaling the mainnet itself." This shift directly touches upon ETH's value capture logic: if the mainnet can host more activity at lower cost, value is more likely to re-precipitate back to L1.

The most common market misinterpretation is viewing the 200 million Gas Limit and 10,000 TPS as certainties deliverable immediately upon activation. In fact, Gas Limit is not TPS; the former is a capacity ceiling, while the latter depends on transaction structure, execution time, and network propagation constraints. The 200 million Gas figure is a direction to be progressively approached post-upgrade, not an instantaneous state on activation day. Similarly, the magnitude of fee reductions is easily overestimated—the essence of repricing is to align fees with actual costs, not universal cuts.

For investors, the next key things to watch are not price, but two engineering facts: whether the public testnets can remain stable across multiple epochs, and whether all clients can reach agreement on time. These two points reflect the mainnet timeline more reliably than any price prediction.

From a broader cross-asset perspective, Glamsterdam serves as a case study on "how infrastructure determines asset narratives": whether a public chain can recapture activity diverted to L2s ultimately depends on the trade-offs made at the foundational architecture level. The implication for the broader crypto and fintech space is that true revaluation often occurs first at the protocol layer, before transmitting to the price layer.

Frequently Asked Questions

Question: Do ETH holders need to do anything?

Answer: No. The upgrade does not change wallet addresses, balances, or any user interfaces. Any communication asking you to "upgrade your ETH" should be regarded as a scam.

Question: When will Glamsterdam go live on mainnet?

Answer: Currently, Q3 2026 is the base case, with some teams referencing late August, but no specific block height is locked. Public testnet activation is the clearest signal of approaching mainnet readiness.

Question: Will this upgrade immediately and significantly reduce gas fees?

Answer: It is more likely to result in potential reductions and greater stability, rather than an immediate, universal fee decrease. The repricing aims to align fees with actual resource costs.

Question: What problems do ePBS and BALs solve?

Answer: ePBS (EIP-7732) brings block building in-protocol, reducing reliance on off-chain relays. BALs (EIP-7928) allow non-conflicting transactions to be processed in parallel by pre-declaring state access.

Disclaimer

This article is for informational purposes only and does not constitute investment, financial, legal, tax advice, or trading recommendations. Prices of crypto assets, stocks, and related financial assets can be highly volatile and involve the risk of total loss of capital. Readers should do their own research (DYOR), assess their own risk tolerance, and consult licensed professionals where necessary. The MEXC Crypto Pulse team assumes no liability for any losses incurred from the use of the information provided herein.