Replace — October 22, 2026: The October 26 Hoodi activation has been postponed, together with the scheduled gas-limit improve to 200M. The schedule and activation directions under have been outdated. See Glamsterdam on Hoodi Postponed for particulars and operator steering.

Following its activation on Sepolia on October 6, the Glamsterdam community improve is now scheduled for the Hoodi testnet. Glamsterdam advances Ethereum’s L1 scaling roadmap with enshrined proposer-builder separation, block-level entry lists, and modifications to gasoline pricing that higher replicate the price of execution and state progress.

The Glamsterdam community improve is scheduled to activate on Hoodi at epoch 132,352, slot 4,235,264 (October 26, 2026, 17:42:48 UTC). On the similar epoch, Hoodi’s gasoline restrict will likely be raised to 200M. See the activation desk under for the deployment schedule. The mainnet activation date has not but been determined.

Hoodi-compatible shopper variations will likely be added to the shopper launch tables as they’re confirmed. Node operators should replace each their execution and consensus layer shoppers earlier than activation.

Glamsterdam Overview

Glamsterdam combines the Amsterdam execution layer improve with the Gloas consensus layer improve. Its headlining modifications are enshrined proposer-builder separation (ePBS) and block-level entry lists (BALs), which change how blocks are produced and validated to help better L1 throughput.

Enshrined Proposer-Builder Separation

EIP-7732 brings the separation between block proposers and builders into Ethereum’s consensus protocol. A proposer features a builder’s dedication to an execution payload, and the builder subsequently reveals that payload. The protocol handles cost to the proposer, decreasing reliance on trusted middleware for the alternate between proposers and builders.

The change additionally separates consensus validation from execution validation, giving validators extra time to validate execution payloads. A payload timeliness committee attests as to if the builder revealed its payload and the corresponding blob information was out there on time. Validator operators and groups sustaining builder infrastructure ought to evaluate the brand new duties and interfaces earlier than the improve.

Block-Degree Entry Lists

EIP-7928 introduces enforced block-level entry lists that file the accounts and storage places accessed throughout a block, along with post-transaction state modifications. These lists permit shoppers to learn state from disk in parallel, validate transactions in parallel, and compute state roots extra effectively.

Collectively, ePBS and BALs present a basis for scaling execution capability whereas retaining block validation sensible for node operators.

Gasoline Pricing and State Development

Glamsterdam adjusts gasoline accounting to higher replicate useful resource utilization. EIP-8037 will increase and individually meters the price of creating state, whereas EIP-8038 updates state-access prices. Extra modifications cowl intrinsic transaction gasoline, calldata, entry lists, and block gasoline accounting.

Utility builders ought to check contracts and gasoline estimation towards the brand new guidelines. Contracts that depend on fastened gasoline stipends, hardcoded gasoline limits, or assumptions about remaining gasoline might have modifications. See the Glamsterdam repricing influence information for the affected-contracts search and testing steering.

Developer and Validator Enhancements

Glamsterdam additionally consists of ETH switch logs, a slot-number opcode, a better most contract measurement, a deterministic manufacturing unit contract, and new stack-manipulation directions. Consensus modifications embody forward-compatible information constructions, excluding slashed validators from proposing, and elevated exit and consolidation churn. The whole scheduled EIP listing is under.

Glamsterdam Specs

EIP-7773 tracks the Glamsterdam improve. The next EIPs are scheduled for inclusion:

EIP-7773 additionally lists supporting networking and informational EIPs:

Glamsterdam Safety

The Ethereum Bug Bounty Program is lively for Glamsterdam specs and EIPs. Shopper implementations develop into eligible as quickly as their releases are added to the shopper launch tables under. See the Ethereum Bug Bounty Program for extra info, together with reward multipliers and reporting necessities.

Glamsterdam Activation

The agreed deployment schedule, mirrored within the Hoodi community configuration, is:

Hoodi’s gasoline restrict can even be raised to 200M on the activation epoch by way of the gasoline restrict schedule, matching Sepolia.

The mainnet activation time will likely be introduced as soon as determined by shopper groups. This announcement covers Hoodi; it doesn’t schedule a mainnet improve.

Shopper Releases

Hoodi-compatible shopper releases are listed under. The tables will likely be up to date as further releases develop into out there. Solely use a launch whose notes explicitly verify help for the scheduled Glamsterdam activation on Hoodi.

Consensus Layer Hoodi Releases

When working a validator, each the Consensus Layer Beacon Node and Validator Shopper have to be up to date.

Execution Layer Hoodi Releases

Tooling

Extra builder and validator tooling compatibility steering will likely be added as soon as confirmed for Hoodi. Operators utilizing exterior block-building infrastructure also needs to evaluate its Glamsterdam-specific improve directions.

FAQ

How do Ethereum community upgrades work?

Ethereum community upgrades require specific opt-in from node operators. Shopper builders coordinate the protocol modifications, and validators and non-staking nodes replace their software program to help them.

A node that doesn’t help the brand new guidelines can’t observe the upgraded community after activation. Coordinating these updates is due to this fact important for a profitable improve.

For a extra exhaustive overview of Ethereum’s governance course of, see this discuss by Tim Beiko.

As an Ethereum mainnet consumer or ETH holder, is there something I must do?

No. This announcement issues Hoodi. A separate announcement will cowl Glamsterdam’s activation on mainnet.

If you would like to look at the improve go stay, you possibly can be part of the on-line viewing celebration!

As a non-staking Hoodi node operator, what do I must do?

Earlier than October 26, 2026 at 17:42:48 UTC, replace each your execution and consensus layer shoppers to releases that help the scheduled Hoodi activation. The shopper launch tables will likely be up to date as variations are confirmed.

As a Hoodi staker, what do I must do?

Replace your execution and consensus layer shoppers earlier than activation. Be certain that each your beacon node and validator shopper are up to date. Overview your shopper’s improve directions for the brand new ePBS duties, any modifications required to builder or validator tooling, and methods to configure the gasoline restrict your validators goal after activation.

As a mainnet node operator or staker, what do I must do?

No motion is required on mainnet on account of this Hoodi announcement. The mainnet activation date and appropriate shopper releases will likely be introduced individually.

As an software or tooling developer, what ought to I do?

Overview the EIPs scheduled for Glamsterdam, check on Sepolia and Hoodi after activation, and examine whether or not modifications to gasoline accounting, logs, opcodes, or shopper interfaces have an effect on your mission. Specifically, observe the repricing influence information to determine contracts that rely on fastened gasoline assumptions and replace gasoline estimation the place wanted.

Why “Glamsterdam”?

Execution layer upgrades are named after Devcon or Devconnect host cities, and consensus layer upgrades use star names. Glamsterdam combines Gloas and Amsterdam, the placement of Devconnect in 2022.