# Grandine and Lighthouse Issue Glamsterdam Clients Ahead of Hoodi Fork By Simon Yoon Canonical URL: https://www.tokenpost.com/news/technology/34816 Published: 2026-10-19T13:55:48.000Z Updated: 2026-10-19T13:55:48.000Z Section: Technology > Hoodi is scheduled to activate the upgrade Oct. 26 at 1:42:48 p.m. ET (17:42:48 UTC). Ethereum has not set a mainnet date. Grandine and Lighthouse issued Glamsterdam client releases on Oct. 19, giving Hoodi operators two more listed software versions to prepare for Ethereum’s scheduled testnet activation next week. Grandine 3.0.0-rc.1 and Lighthouse v8.3.0 are the newly posted consensus-client versions. A check at 9:47 a.m. ET (13:47 UTC) on Oct. 19 found version numbers for all six consensus clients on Hoodi’s compatibility list, compared with three of its six execution clients. The [previously scheduled Hoodi fork]() is set for Oct. 26 at 1:42:48 p.m. ET (17:42:48 UTC). It will occur at epoch 132,352 and slot 4,235,264, following Glamsterdam’s Oct. 6 activation on the Sepolia test network. The Oct. 19 releases add a software milestone to Hoodi’s established timetable. The published list had no version numbers for the remaining three execution clients at the time of the check. That list shows which versions were named, rather than which software operators have installed. Hoodi node operators need updated software for both Ethereum’s execution and consensus layers before the fork. Hoodi validators also need compatible updates for their beacon nodes and validator clients. A new consensus-client version alone therefore does not cover every software update required for an operator running both layers. Glamsterdam brings the exchange of a proposed block payload and payment between builders and proposers into Ethereum’s protocol. It also introduces block-level access lists, which record the accounts and storage used in a block. Clients can use those records to perform certain reads and validation tasks in parallel. The changes are specified in EIP-7732 and EIP-7928, respectively. The upgrade changes gas charges tied to creating and accessing network state. Tests replaying past mainnet transactions found most contracts unaffected. Some contracts that depend on fixed gas assumptions may need adjustments. Hoodi’s 200 million-gas schedule sets a client default and recommended maximum that operators may override. The figure applies to the test network, and Ethereum has not set a mainnet activation date for Glamsterdam. The next scheduled step is Hoodi’s Oct. 26 fork. Operators need to complete the required client updates before activation at 1:42:48 p.m. ET (17:42:48 UTC). ## Links in this article - [previously scheduled Hoodi fork](https://www.tokenpost.com/news/technology/33836)