Replace — October 22, 2026: The October 26 Hoodi activation has been postponed, together with the scheduled gas-limit enhance to 200M. The schedule and activation directions beneath have been outmoded. 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 identical epoch, Hoodi’s gasoline restrict shall be raised to 200M. See the activation table beneath for the deployment schedule. The mainnet activation date has not but been determined.
Hoodi-compatible consumer variations shall be added to the client release tables as they’re confirmed. Node operators should replace each their execution and consensus layer purchasers 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 larger 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 fee 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 whether the builder revealed its payload and the corresponding blob knowledge was out there on time. Validator operators and groups sustaining builder infrastructure ought to evaluation 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 areas accessed throughout a block, along with post-transaction state modifications. These lists enable purchasers 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.
Fuel Pricing and State Progress
Glamsterdam adjusts gasoline accounting to raised 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.
Software builders ought to take a look at contracts and gasoline estimation towards the brand new guidelines. Contracts that depend on mounted gasoline stipends, hardcoded gasoline limits, or assumptions about remaining gasoline might have modifications. See the Glamsterdam repricing impact guide for the affected-contracts search and testing steering.
Developer and Validator Enhancements
Glamsterdam additionally contains ETH switch logs, a slot-number opcode, a better most contract dimension, a deterministic manufacturing facility contract, and new stack-manipulation directions. Consensus modifications embrace forward-compatible knowledge constructions, excluding slashed validators from proposing, and elevated exit and consolidation churn. The whole scheduled EIP checklist is beneath.
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 change into eligible as quickly as their releases are added to the client release tables beneath. See the Ethereum Bug Bounty Program for extra data, together with reward multipliers and reporting necessities.
Glamsterdam Activation
The agreed deployment schedule, mirrored within the Hoodi network configuration, is:
| Community | Epoch | Slot | UTC Time | UNIX Timestamp |
|---|---|---|---|---|
| Sepolia | 353,024 | 11,296,768 | 2026-10-06 13:53:36 | 1791294816 |
| Hoodi | 132,352 | 4,235,264 | 2026-10-26 17:42:48 | 1793036568 |
| Mainnet | TBD | TBD | TBD | TBD |
Hoodi’s gasoline restrict may even be raised to 200M on the activation epoch by way of the gas limit schedule, matching Sepolia.
The mainnet activation time shall be introduced as soon as determined by consumer groups. This announcement covers Hoodi; it doesn’t schedule a mainnet improve.
Shopper Releases
Hoodi-compatible consumer releases are listed beneath. The tables shall be up to date as further releases change into out there. Solely use a launch whose notes explicitly affirm help for the scheduled Glamsterdam activation on Hoodi.
Consensus Layer Hoodi Releases
When operating a validator, each the Consensus Layer Beacon Node and Validator Shopper should be up to date.
Execution Layer Hoodi Releases
Tooling
| Identify | Model | Hyperlink |
|---|---|---|
| commit-boost | 0.12.0-rc1 | Download |
Extra builder and validator tooling compatibility steering shall be added as soon as confirmed for Hoodi. Operators utilizing exterior block-building infrastructure also needs to evaluation 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 not observe the upgraded community after activation. Coordinating these updates is subsequently important for a profitable improve.
For a extra exhaustive overview of Ethereum’s governance course of, see this talk 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 reside, you may be part of the online viewing party!
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 purchasers to releases that help the scheduled Hoodi activation. The client release tables shall be up to date as variations are confirmed.
As a Hoodi staker, what do I must do?
Replace your execution and consensus layer purchasers earlier than activation. Be certain that each your beacon node and validator consumer are up to date. Overview your consumer’s improve directions for the brand new ePBS duties, any modifications required to builder or validator tooling, and the way 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 suitable consumer releases shall be introduced individually.
As an utility or tooling developer, what ought to I do?
Overview the EIPs scheduled for Glamsterdam, take a look at on Sepolia and Hoodi after activation, and examine whether or not modifications to gasoline accounting, logs, opcodes, or consumer interfaces have an effect on your undertaking. Specifically, observe the repricing impact guide to establish contracts that depend upon mounted 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 situation of Devconnect in 2022.
