Glamsterdam upgrade progress
Scope frozen
Series completed
Hoodi upgrade postponed
Date not yet announced
Next Glamsterdam discussion
Glamsterdam is on the ACDE #249 agenda. Watch for testing updates and next steps.
Official meeting agendaHoodi upgrade postponed
Teams are reviewing issues related to EIP-8037 and EIP-8038. A new activation date has not been announced.
Official postponement recordGlamsterdam activated on Sepolia
The upgrade is active on Sepolia. The mainnet date has not been announced.
Official testnet recordsGlamsterdam’s key changes
Enshrined proposer-builder separation
Brings block proposer-builder coordination into the protocol, reducing trust dependencies and allowing more time for data propagation.
Original proposalBlock-level access lists
Provides state-access and outcome information in advance, laying the groundwork for parallel execution and more efficient synchronization.
Original proposalState creation cost changes
Adjusts fees for account, contract and storage operations to better reflect the cost of long-term data retention by nodes.
Original proposalTransaction fees and L2 impact
How could transaction fees change?
Plans include reducing base gas for ETH transfers and adjusting charges for new accounts, contracts and storage. Final fees still depend on network demand, and changes differ by operation.
Will L2 networks upgrade at the same time?
Each L2 follows its own adoption schedule. Check announcements from the network you use to see whether new mechanisms are adopted and how fees and services change.
What should I do?
Your ETH does not need to be exchanged.
A protocol upgrade does not require transferring assets to an “upgrade address.” Follow service announcements from your wallet or trading platform.
- Deposits, withdrawals and maintenance follow platform announcements.
Also watch your L2’s adoption plans.
An L1 upgrade and L2 adoption of new mechanisms are separate milestones. Users should check network announcements; developers should assess the impact using their own application workloads.
- Check access lists, state costs and client behavior.
- Validate compatibility and application performance in a test environment.
Prepare upgrades using official client release notes.
Verify compatible versions for execution, consensus and validator clients, distinguishing testnet from mainnet requirements.
- Monitor backups, synchronization and block proposals.
- Once the mainnet date is confirmed, act according to the relevant network’s schedule.
Pectra, Fusaka and Glamsterdam compared
| Upgrade | Mainnet date and status | Key changes | User impact |
|---|---|---|---|
| PectraOfficial overview | 2025-05-07Live | EIP-7702 account capabilities, validator balance cap and higher blob throughput | Wallets may enable programmable account features; validator management improves and L2 data capacity increases. |
| FusakaOfficial overview | 2025-12-03Live | PeerDAS and the blob parameter adjustment mechanism | Increases data availability capacity, supporting L2 scaling. |
| GlamsterdamOfficial overview | Not yet announcedHoodi upgrade postponed | ePBS, block-level access lists, state creation costs and more | Improves L1 processing and synchronization, and adjusts long-term state storage fees; fee effects vary by operation. |
Earlier upgrades: Shapella (April 12, 2023) enabled staking withdrawals; Dencun (March 13, 2024) introduced blobs to reduce L2 data publication costs.
Frequently asked questions
When will Glamsterdam launch on Ethereum mainnet?
The mainnet date has not been announced. Sepolia activated the upgrade on October 6, 2026. The Hoodi upgrade has been postponed, with no new activation date announced. Follow official Ethereum protocol announcements for mainnet timing.
Do I need to exchange my ETH after the upgrade?
No. Your existing ETH remains usable. The upgrade will not ask you to send funds to an “upgrade address” or provide a seed phrase. Treat such requests as potential scams.
What should wallet or exchange users do?
Ordinary ETH holders usually need not take action. Follow announcements from your wallet or exchange, and use the relevant service notices for any deposit/withdrawal pauses or network maintenance.
Will Glamsterdam lower gas fees for every transaction?
Not necessarily. Plans include lowering base gas for ETH transfers while adjusting fees for new accounts, contracts and storage. Final fees still depend on network demand.
Will Glamsterdam automatically change L2 fees?
Not necessarily. Each L2 has its own upgrade and adoption plans. Fee changes also depend on whether new mechanisms are adopted and on network demand. Check your L2’s announcements.
What should nodes and validators prepare in advance?
Follow official client release notes and verify compatible execution, consensus and validator client versions. Upgrade according to the relevant network’s requirements; testnet versions and dates cannot be applied directly to mainnet.
Sources
- Glamsterdam upgrade overviewEthereum.org · Planned scope
- Forkcast upgrade progressPublic testnet progress
- Ethereum protocol announcementsNetwork activation and client requirements
- EIP-7732Enshrined proposer/builder separation (ePBS)
- EIP-7928Block-level access lists (BALs)
- EIP-8037State creation gas costs
- Shapella mainnet upgrade2023-04-12
- Dencun mainnet upgrade2024-03-13
- Pectra mainnet upgrade2025-05-07
- Fusaka mainnet upgrade2025-12-03
The upgrade scope may still change before mainnet launch.