News · Tech & Protocols
The update enables cell-level data dissemination by default and sets a 200M gas limit schedule for the Oct. 6 Sepolia fork.
Key point 1 of 3
01
Prysm v7.2.1 turns on PeerDAS cell-level partial data columns by default, deprecating the previous opt-in flag.
Key point 2 of 3
02
The client incorporates the Sepolia EIP-8261 schedule, defaulting validators to a 200M gas limit at the Gloas fork.
Key point 3 of 3
03
Proposer settings files now require builder auth data and keys in 0x-hex instead of base64 to match keymanager specifications.
Context
The Sepolia testnet serves as the primary trial ground for Ethereum's upcoming Glamsterdam and Gloas consensus changes prior to any mainnet deployment.
Why it matters
Testnet node runners and staking operators using Prysm must verify builder configuration files to avoid invalid authentication when proposing blocks.
What to watch
Sepolia fork activation at epoch 353024 on Oct. 6, 2026, at 13:53:36 UTC.
Sources
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