Core Dev Calls: notes on the Ethereum core developer calls

Changes to the Ethereum protocol are decided on the core developer calls (All Core Devs). For every execution layer call (ACDE), consensus layer call (ACDC) and testing call (ACDT), we record what was decided and what was contested.

• ACDC #191 · Dropping Quick Slots, Going all in on the quantum transition (2026-11-12)
  The proposing team withdrew Quick Slots (EIP-8198) themselves, dropping it from the Hegotá candidate list, and BLS signature based decoupled consensus was declared dead. Post-quantum (PQ) transition has effectively risen to become the priority dominating all future forks.
• ACDC #190 · EIP-8015 Hegotá Scheduled for Inclusion (2026-10-29)
  Scoping for the Hegotá fork wrapped up on this call. EIP-8015 was Scheduled for Inclusion (SFI), four proposals including bundled attestation propagation moved to Considered for Inclusion (CFI), and EIP-8205, the deposit front-running fix, was Declined for Inclusion (DFI).
• ACDT #102 · Hoodi fork postponed Revisit after audit (2026-10-26)
  The Hoodi testnet fork was postponed by at least 2 weeks after a security report said the gas repricing EIPs 8037 and 8038 interact with deployed contracts in unexpected ways. The schedule will be reset after the external audit results, and spec changes are kept only as a last resort.
• ACDE #248 · Hoodi fork cancelled indefinitely Mainnet delay unavoidable (2026-10-22)
  After Chainsecurity disclosed a vulnerability in which the Glamsterdam gas repricing EIPs make malicious transactions that previously failed succeed, the Hoodi testnet fork scheduled for October 26 was cancelled indefinitely, and the decision on a mainnet date was postponed until the impact analysis is finished.
• ACDT #101 · Builder deposit fix excluded Hoodi fork stays on schedule (2026-10-19)
  They decided not to include the fix separating builder and validator deposits in Glamsterdam, and to fork the Hoodi testnet on October 26 as scheduled. The EL's BAL retention period was also fixed at 14,299 epochs, so CL clients can proceed with blinding.
• ACDC #189 · Execution proofs 8025 Excluded from Hegotá (2026-10-15)
  Four proposals, including optional execution proofs (EIP-8025), were dropped from Hegotá candidacy because of insufficient support from CL teams, the Glamsterdam builder onboarding fix requested by Lido was rejected, and EIP-8205 was deferred to the next call.
• ACDT #100 · Frames devnet launches Thursday (2026-10-12)
  The Frames-centered bogota-devnet-1 was confirmed to launch on Thursday, and the FOCIL-centered heze-devnet-2 will keep a 12-second slot and be brought up by October 28. The proposer selection bug reported just before the call was not fixed in Glamsterdam and was deferred until after Hegotá.
• ACDE #247 · Quantum-resistant EOA migration path CFI (2026-10-08)
  The Glamsterdam fork on the Hoodi testnet was set for October 26, and in the final scoping of the next fork Hegotá, eight EIPs were moved to Considered for Inclusion (CFI) and three were declined (DFI). In particular, EIP-8151 and EIP-8298 survived as a bundled quantum-resistant migration path for regular accounts (EOAs).
• ACDT #99 · Sepolia fork ready (2026-10-05)
  With the Sepolia Glamsterdam fork one day away, at 13:53 UTC on October 6, all clients confirmed they are ready. Builders will not be onboarded before the fork and will instead deposit with regular Sepolia ETH right after it.
• ACDC #188 · Quick Slots 10s Hegotá CFI (2026-10-01)
  Quick slots (EIP-8198), which cut the slot time from 12 seconds to 10, moved to Considered for Inclusion (CFI) for Hegotá. There was opposition that the post-quantum transition should come first, but the condition attached was that it will be re-verified with additional data before Scheduled for Inclusion (SFI) and can be dropped if necessary.
• ACDT #98 · 200M gas limit Execution safety confirmed (2026-09-28)
  With the slow blocks on Devnet 8 confirmed to be caused by debug tracing, there was no disagreement on the conclusion that a 200M gas limit is safe from an execution time perspective. For the new block tag for the Fast Confirmation Rule (FCR), the name 'confirmed' was preferred, and the direction of introducing it as an optional feature without a hard fork was agreed.
• ACDE #246 · Sepolia 200M Signal at fork (2026-09-24)
  Sepolia confirmed it will start signaling a 200M gas limit at the same time as the Glamsterdam fork. The call also sorted through the candidates for the next fork, Hegotá, and moved more than nine EIPs to Considered for Inclusion (CFI).
• ACDT #97 · Hegotá devnets Split, then merged (2026-09-21)
  No major new decisions came out of this call. It agreed to start Hegotá devnets separately, one for FOCIL only and one for Frames only, and merge them later, while the CL block serving window and BAL retention period issues were passed to asynchronous discussion with no conclusion.
• ACDC #187 · Sepolia fork Scheduled for October 6 (2026-09-17)
  The Glamsterdam fork on the Sepolia testnet was set for October 6, and Hoodi is tentatively October 27. Candidate sorting for the next fork, Hegota, also began: EIP-8015 moved to Considered for Inclusion (CFI), seven EIPs were declined (DFI), and the issuance-reduction EIP-8363 was put on hold with no decision.
• AMA #15 · Quantum-resistant L1 Target: end of 2029 (2026-09-16)
  Most questions focused on the issuance curve, the staking ratio, and the quantum-resistance transition schedule. Foundation researchers publicly stated their personal view that the current staking incentives are unsustainable, and answered quantum resistance with an official target of completion by December 2029 and a per-fork phased plan.
• ACDT #96 · Sepolia Glamsterdam Confirmed for Oct 6 (2026-09-14)
  The Sepolia Glamsterdam upgrade was confirmed for Oct 6 with the agreement of all clients. On the day of the call, Glamsterdam activated on devnet 11 with no drop in participation, a green light for the schedule.
• ACDE #245 · EIP-8141 Frames Hegota headliner (2026-09-10)
  Frame Transactions (EIP-8141) were officially confirmed as the headliner of the next fork, Hegota. The rest of the time was spent going through 37 EIPs for Hegota scoping and making a large number of DFI decisions that remove them from priority candidacy.
• ACDT #95 · EIP-8253 Postponed to Hegotá (2026-09-07)
  A rough consensus formed that EIP-8253, which fixes 28 old accounts with nonce 0 but remaining storage, is too late for Glamsterdam, so it was postponed to the next fork, Hegotá, and the final decision was handed to Thursday's ACD call.
• ACDC #186 · Sepolia fork Scheduled for October 6 (2026-09-03)
  The Glamsterdam fork date on the Sepolia testnet was set for October 6, 2026, and the Hoodi date was pushed to the next call. A bug fix for state gas EIP-8037 was also confirmed with the agreement of all execution layer clients.
• ACDT #94 · EIP-8037 refund excluded from Glamsterdam (2026-08-31)
  Decided to exclude from Glamsterdam the EIP-8037 change that would revive state gas refunds for the create-then-self-destruct pattern on temporary contracts. The decision on the larger issue, whether to fix the cross-frame gas laundering bug, was deferred to the September 4 ACDC.
• ACDE #244 · EIP-8141 Frames SFI confirmed for Hegotá (2026-08-27)
  EIP-8141 Frames, the skeleton of account abstraction (AA), was moved up to Scheduled for Inclusion (SFI) in Hegotá at the request of client teams. Because convergence work with the L2 camp's EIP-8130 is ongoing, the spec may change significantly, and a caveat was attached that SFI status must not be used as an argument against those changes.
• ACDT #93 · Devnet-9 launch Target early next week (2026-08-24)
  It was agreed that all CL clients will have their trunk branches ready by Thursday (ACDE) and that devnet-9 will launch early next week. Devnet-9 will be a network where a non-finality situation, in which chain finalization stops, is deliberately created.
• ACDC #185 · EIP-7610 Excluded from Glamsterdam (2026-08-20)
  EIP-7610 was officially cancelled in Glamsterdam, and four EIPs, including EIP-8253 which replaces it, were accepted as candidates for the next fork, Hegotá. Testnet fork dates were also proposed for the first time: Sepolia on September 28 and Hoodi on October 26.
• ACDT #92 · EIP-7610 Excluded from Glamsterdam (2026-08-17)
  Participants agreed to drop EIP-7610 from the Glamsterdam fork. Geth and Reth already skip the related tests, so actual behavior does not change at all. Instead, EIP-8253, which removes the root of the problem, was moved up as a target for the next fork, Hegota.
• ACDE #243 · Glamsterdam 200M Gas Limit Confirmed (2026-08-13)
  The gas repricing figures (EIP-2780, 8037, 8038) were finalized, and it was concluded that a 200M gas limit is safe in Glamsterdam. 12 candidate EIPs for the next fork, Hegota, were accepted, and the decision on how to implement native AA was postponed to the August 25 breakout.
• ACDT #91 · Devnet 8 postponed until gas costs are final (2026-08-10)
  Following a report that the Glamsterdam gas repricing numbers cannot yet be finalized, the group decided to postpone the launch of Devnet 8, which serves as the public testnet, until the numbers are settled at this week's ACDE. EIP-8070 became a Devnet 8 requirement with no objections.
• ACDC #184 · Issuance cut proposal submitted for Hegotá (2026-08-06)
  Several EIPs proposed for Hegotá were Proposed for Inclusion (PFI) at once. Among them, the issuance cut proposal (EIP-8363), which burns part of validator rewards to hold the staking ratio at 50%, appeared two days before the deadline and drew strong opposition from the community, including Lido. The call stated explicitly that Scheduled for Inclusion requires community consensus.
• ACDT #90 · Gas repricing 75 anchor freeze (2026-08-03)
  Froze the Glamsterdam repricing numbers. By lowering the anchor from 100 to 75 Mgas/s while keeping the SLOAD price at the current 2,100, relative prices are fixed from here on and only the block gas limit is adjusted.
• ACDE #242 · Hegotá PFI 7 EIPs received (2026-07-30)
  Ahead of the proposal deadline for the next fork, Hegotá, seven EIPs were received as Proposed for Inclusion (PFI). The call also decided to launch the last Glamsterdam devnet as a public testnet called Platåberget.
• ACDT #89 · Blob pool Engine API Included in Devnet 8 (2026-07-27)
  It was agreed to include only the Engine API part of the sparse blob pool (EIP-8070) in Glamsterdam Devnet 8, and actual cell-level data availability sampling (cell-level DAS) was postponed. The final repricing numbers are not out yet, so the Devnet 8 launch date was pushed to the next call.
• ACDC #183 · Devnet-7 EIPs SFI finalized in bulk (2026-07-23)
  All Glamsterdam EIPs included in devnet-7 were moved to SFI (Scheduled for Inclusion) without objection, and four new EIPs were accepted as candidates for the next fork, Hegotá.
• ACDT #88 · Devnet-7 EIPs Ready for SFI (2026-07-20)
  All EIPs in Glamsterdam devnet-7 meet the SFI criteria set by EIP-7723, so it was decided to ratify formal Scheduled for Inclusion (SFI) at Thursday's ACD call. Devnet-8 focuses on re-verifying the fork transition and cleaning up repricing, and devnet-9 focuses on non-finality chaos testing.
• ACDE #241 · Devnet 7 app developer public network (2026-07-16)
  Glamsterdam Devnet 7 was designated as a short-lived public network where app developers can test ahead of time, without a separate Mekong-style network. This gives app developers a place to test the new specification without breaking existing services before moving to Sepolia or Hoodi.
• ACDT #87 · Devnet 7 gas raised to 300M (2026-07-13)
  It was decided to raise the Glamsterdam Devnet 7 gas limit from 200M to 300M and launch soon, and the EIP-8037 bug fix, which had allowed blocks to be inflated up to 8 times, is already reflected in spec 7.2 and included in Devnet 7.
• ACDC #182 · EIP-7928 included Devnet7 confirmed (2026-07-09)
  Agreed to include Tony's block-access-list change and progressive containers in Glamsterdam devnet7 and launch it early next week. The ePBS-related API and the circuit breaker design were also made more concrete.
• ACDT #86 · Spec freeze after devnet7 is final (2026-07-06)
  Settled on Glamsterdam devnet-7 as the last devnet and agreed to a light spec freeze after launch. After that, only fine-tuning at the parameter level, such as gas cost constants, is allowed.
• ACDE #240 · Devnet 7 wrap-up 5 Hegotá proposals (2026-07-02)
  The Glamsterdam devnet 7 spec was effectively finalized, and it was decided to add a deposit-halt function to the preliminary builder deposit contract. At the same time, the EIP proposal deadline for the next fork, Hegotá, was set for August 6, and 5 privacy- and scaling-related EIPs were accepted as candidates.
• AMA #14 · 50% staking cap actually conservative (2025-08-29)
  It covered a wide range, starting with the most upvoted question on the issuance curve and going through zkEVM real-time proving and RISC-V, ePBS and 6-second slots in Glamsterdam, and Foundation organizational operations. The Foundation side acknowledged that the share of staked ETH will keep rising under the current curve, and answered that separating provers does not harm censorship resistance and that L1 will not jump into the ultra-low-latency race.