Week in Ethereum News
November 27, 2021

Eth News and Links

Mainnet execution layer

  • Vitalik’s roadmap for scaling rollups, calldata expansion (EIP4488/90), then ~4 shards (similar scale of Altair upgrade), then N shards (committee secured) and then data availability sampling to complete sharding rollout
  • Latest core devs call video. Notes from Tim Beiko:
    • Update your node for Arrow Glacier upgrade
    • Kintsugi devnet 2 next week, aiming for December “final devnet”
    • Discussion on lowering cost of rollups (EIP4488 vs EIP4490), attempt to prototype and decide if upgrade can be shipped before PoW switch off
  • Geth released details of DoS vulnerability via malicious snap/1 request, fixed in v1.10.9; run geth version-check to check for published vulnerabilities
  • Geth v1.10.13: fixes log retrieval for old archive nodes, legacy transaction filtering in tx pool & snap sync crash with malicious packets
  • Nethermind v1.12.0: upgraded to .NET v6.0, supports Apple silicon
  • Overview of witnesses and role they play in stateless Ethereum
  • History expiry AMA, options are one-time expiry of PoW history a few months after PoW switch off and/or regular rolling expiry (EIP 4444)


  • EIP4469: Wrapped metaverse token
  • EIP4488: Transaction calldata gas cost reduction with total calldata limit
  • EIP4490: Second transaction data gas cost reduction
  • EIP4494: Permit for ERC721 NFTs

Proof of Stake consensus layer


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Stuff for developers



Application layer

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