Ethereum Foundation launches Plåtäberget testnet for community testing ahead of the Glamsterdam upgrade.
Tech & Launches ·
The Ethereum Foundation has launched Platåberget, a public testnet designed to let the community test the Glamsterdam upgrade before it reaches Ethereum's longer-lived testnets. The testnet is scheduled to undergo the Glamsterdam fork on August 20th and is intended to run for several months, providing a stable environment for experimentation. Platåberget features a small but publicly joinable validator set, allowing anyone to deposit validators and test deposit workflows.
Glamsterdam introduces breaking changes across consensus and execution layers that will require updates from application developers. Key changes include enshrined Proposer-Builder Separation with a new builder API flow, block-level access lists recording state locations, coordinated gas repricings targeting a ~200M gas floor, and increased maximum deployed contract sizes from 24KiB to 64KiB and maximum initcode sizes from 48KiB to 128KiB. Tools relying on hardcoded maximum gas limits—including wallets, indexers, and gas estimators—will break and need updating. Infrastructure dependent on block production and validation pipelines should also expect to be affected.
Participants can access the testnet through a one-click configuration flow and obtain testnet ETH via a faucet. Public validator and builder deposits are available via the Dora explorer. The exact client release requirements and full EIP specifications are listed in documentation, though the material does not clarify which client releases are mandatory versus optional.