# epbs-devnet-1 spec :::info :mega: epbs-devnet-1 targets to launch by 18th of March 2026. ::: :::info :mega: On devnet 1 only local block building will be tested only. ::: ## EIP List for epbs-devnet-1 [EIP-7732: Enshrined Proposer-Builder Separation](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-7732.md) :new: **Key:** - :up:, EIP has updated! - :new:, new EIP added. ### Implementation tracker CL | Feature/EIP | Lodestar | Lighthouse | Prysm | Teku | Grandine | Nimbus | ----------- | -------- | ---------- | ----- | --- | --- | --- | | **EIP-7732** | :question: | :question: | :question: | :question: | :question: | :question: ### Test Releases **Consensus Specs:** TBD **Execution Specs:** N/A ### Spec versions required & Open PRs **Beacon Metrics** **Execution Metrics** **Beacon API** - [PR-552 - Standardized Epbs Beacon Api](https://github.com/ethereum/beacon-APIs/pull/552) Merged :heavy_check_mark: **Builder Specs** **Consensus Specs** - ~~[PR-4843 - Variable PTC deadline](https://github.com/ethereum/consensus-specs/pull/4843) Open~~ - [PR-4884 - Add payload data availability vote to the store](https://github.com/ethereum/consensus-specs/pull/4884) Merged :heavy_check_mark: - [PR-4897 - Check if pending deposit exists before applying to builder](https://github.com/ethereum/consensus-specs/pull/4897) Merged :heavy_check_mark: - [PR-4918 - Only allow attestations for known payload statuses](https://github.com/ethereum/consensus-specs/pull/4918) Merged :heavy_check_mark: - [PR-4947 - Add pre-fork subscription note for proposer_preferences topic](https://github.com/ethereum/consensus-specs/pull/4947) Merged :heavy_check_mark: - [PR-4948 - Reorder payload status constants](https://github.com/ethereum/consensus-specs/pull/4948) Merged :heavy_check_mark: - [PR-4950 - Extend by_root reqresp serve range to match by_range](https://github.com/ethereum/consensus-specs/pull/4950) Merged :heavy_check_mark: - [PR-4979 - Add a PTC Lookbehind slice in the state](https://github.com/ethereum/consensus-specs/pull/4979) Open :exclamation: **Execution APIs** **Execution Spec PRs** ## Kurtosis Interop Conifg (Pre-devnet testing) TBD Previous devnet spec for reference: https://notes.ethereum.org/@ethpandaops/epbs-devnet-0
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ethpandaops For the ethpandaops team, devops for EL/CL layers
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bal-devnet-3 spec

:::info :mega: bal-devnet-3 targets to launch 04 March 2026. ::: :::info ❗ EL clients: please add flags to enable/disable BAL optimizations batch/parallel io and parallel execution. ::: :::info ❗ EL clients: EIP-8037 will be using a hardcoded value for the cost per state byte of 1174. This aligns with a block gas limit of 100M, the value being set for the devnet. The cost per state byte value of 1174 will be a treated as a fork constant for this devnet and not depend on the block gas limit. For devnet-4 we will use the full EIP variant where the cpsb will depend on the block gas limit.

3/23/2026
bal-devnet-2 spec

:::info :mega: bal-devnet-2 targets to launch 04 Feb 2026. (launched 2026-Feb-06 02:29:50 PM UTC) ::: :::info ❗ EL clients: please add flags to enable/disable BAL optimizations batch/parallel io and parallel execution. ::: EIP List for bal-devnet-2

3/23/2026
blob-devnet-0

:::info :mega: blob-devnet-0 launched on 21st of Jan 2026. ::: :::success :mega: Weekly discussion ::: EIP List for blob-devnet-0 EIP-8136 - Gossipsub’s Partial Messages Extension and Cell Level dissemination :new:

3/18/2026
epbs-devnet-0 spec

:::info :mega: epbs-devnet-0 targets to launch by 4th of March 2026 ::: :::info :mega: On epbs-devnet-0, only self-built payloads will be tested. ::: EIP list for epbs-devnet-0 EIP-7732: Enshrined Proposer-Builder Separation :new:

2/27/2026
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