Ethereum Unveils Plataberget Testnet Ahead of Major Upgrade

Ethereum has launched its Plataberget public testnet, which will serve as a testing ground for the upcoming Glamsterdam upgrade. The network is expected to use about 50,000 validators across roughly 50 nodes, with different client combinations being tested.

The Glamsterdam fork, set for August 20, 2026, includes several changes aimed at improving how Ethereum processes transactions. ePBS will bring proposer-builder separation directly into Ethereum's core rules, and BALs will record which parts of Ethereum's state are accessed during block execution.

Another change raises the smart contract size limit from 24 KiB to 64 KiB. The maximum initcode size will rise from 48 KiB to 128 KiB. These changes could affect wallets, gas estimators, and other tools that assume every ETH transfer has the same gas cost.