Ethereum Upgrade Glamsterdam: What Stakers Need to Check on Their Client Now

Ethereum is getting its next major upgrade, and for the first time it has a date: on October 6, 2026, Glamsterdam is due to be activated on the Sepolia test network. If you stake yourself, that is the point from which your node needs a software version that does not exist today as a stable release. On September 11, 2026 we counted the published version levels of all ten major Ethereum clients to show how far preparation has actually come.

The short answer first: not one of the ten clients checked carried a stable version on that day with the upgrade in its name. The work is happening in pre-releases and nightly test builds. For you that means nothing needs doing today. What matters more is knowing when the moment arrives.

Glamsterdam, Gloas and Sepolia: What Lies Behind the Names of the Ethereum Upgrade

Three terms turn up in every report on this upgrade, and they mean different things.

Glamsterdam is the collective name for the next change to the rules of the Ethereum protocol. It is assembled from the names of the two layers Ethereum is changing at once: Gloas for the consensus layer and Amsterdam for the execution layer. Anyone reading about Gloas in meeting minutes is therefore reading about the same process, simply the other half of it.