Ethereum's upcoming upgrade, Glamsterdam, is set to activate on the Hoodi test network on October 26. This marks another crucial testing phase before a mainnet launch. The upgrade will introduce significant changes to Ethereum's block production and execution cost accounting. Key among these is enshrined proposer-builder separation (ePBS), integrating this relationship into the protocol. Block-level access lists are also being implemented to enhance parallel processing and validation of block components. Furthermore, Glamsterdam will alter gas accounting, impacting how state creation and access are charged. This alteration is important for application developers relying on specific gas cost assumptions. Validators and node operators on Hoodi must ensure their clients are compatible before the activation. The testnet's gas limit will increase to 200 million, a significant engineering step. This Hoodi test is vital for assessing the planned changes under realistic operating conditions. No mainnet activation date has been announced yet, and users do not need to take any action.