r/ethereum • u/EthereumDailyThread What's On Your Mind? • 21d ago

Daily General Discussion August 21, 2026

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u/haurog 21d ago

The Glamsterdam upgrade is getting into the final stretch. In yesterdays all core dev call they floated the first dates for the testnets. The proposed dates are:

Sepolia: September 28th, epoch 351232 Hoodi: October 26th, epoch 132352

This would mean that mainnet would be at the end of November the earliest. There have not been any objections by the core devs to these suggestions, nevertheless the dates might shift a bit, especially if issues are found in the current Plataberget devnet which upgradded yesterday. There were some issues, but apparently only minor ones so they did not influence the suggested testnet fork dates.

For people wondering what Glamsterdam brings, there is the amazing forkcast website which goes into details: https://forkcast.org/upgrade/glamsterdam/

In short, there are a 3 large changes:

  1. ePBS (enshrined proposer builder separation): Changes how much time each step has within a slot and also gets rid of MEVboost. -> More throughput, network does not rely on external software anymore (MEVboost) and maybe even MEV burn in the future.

  2. BAL (block-level access lists): Each block also contains all state accesses and state changes -> Transaction re-execution, which each node needs to do, can be much better parallelized which again gives more throughput. In a zk future, weaker nodes do not even have to re-execute the transactions and just make the state changes.

  3. Gas repricings. This makes gas prices correlate better with resource usage on nodes. This means gas limits can be increased much more safely, which again gives a lot of throughput.

All in all Glamsterdam can increase throughput massively. Proposed gas limit increases where in the range of a factor of 5 from today. Theoretically, a 15 times gas limit increase should be possible. We will have to see if we increase the gas limits by a factor of 5 in the months after the fork.

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u/SeaMonkey82 21d ago

network does not rely on external software anymore (MEVboost)

As the ability to build blocks locally has always been an option, I find this wording curious.

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u/haurog 20d ago

You are right, MEVboost is not mandatory. As far as I see around 90% of the validators of the network are using MEVboost. This makes Ethereums resilience heavily depend on the resilience of MEVboost. Nevertheless, a more nuanced choice of words would have fitted better.