New Week in Ethereum 2025-10-31

Week in Ethereum News

The Ethereum community has finalized the Fusaka mainnet upgrade date for December 3, 2025, with BPO1 scheduled for December 9 and BPO2 for January 7, 2026. This major upgrade includes PeerDAS for enhanced data availability and will significantly improve Layer 2 scalability. Client releases are expected on November 3, one month before the mainnet upgrade.

All Core Devs

Consensus (ACDC) #168, October 30, 2025
:
Fusaka upgrade:
- Confirmed mainnet dates: Fusaka on December 3, BPO1 on December 9, BPO2 on January 7, 2026
- Mainnet client releases scheduled for November 3 (Prysm will be delayed due to a bug)
- Discussed a bug in the Prism client causing non-prism peers to be kicked out after a few hours
- Reviewed Sepolia BPO2 and Hoodi testnet progress, with a small participation drop in Hoodi due to operator issues and a Reth bug (now patched)
Glamsterdam upgrade:
- Discussed non-headliner EIP scoping for the consensus layer, with client team writeups due by November 13
- Reviewed EIP-7688 (stable containers) and EIP-8045 (excluding slashed validators from proposing)
- Discussed EIP-8061 (increasing churn limits) and its implications for weak subjectivity
- Presented EIP-8062 (adding fees to SWAP withdrawals) and EIP-8068 (adjusting effective balance calculation)
- Raúl presented PeerDAS cell-level deltas, which would allow increasing max blobs from 21 to 72
- Discussed the inclusion of FOCIL (EIP-7805) and its impact on the timeline
Heka was chosen as the H-star name for the upgrade after Glamsterdam

EIP-8066: Upgrade Mascots proposed: Andrew B Coathup proposed a new EIP to standardize the process for selecting mascots for Ethereum upgrades. A mascot is currently needed for the Glamsterdam upgrade.

Hybrid Encrypted Mempools: Proposed a new approach to encrypted mempools that combines the benefits of different encryption schemes to improve privacy and efficiency.
Optimal Outbound Neighbors for P2P networks: Published research on selecting optimal outbound neighbors (SOON) for fast, bandwidth-efficient propagation in P2P networks, which could improve Ethereum's networking layer.

Linea shipped a multi-fork compatibility release (Beta v4.0) — Mainnet activated Paris, Shanghai & Cancun/Prague milestones on Oct 22–28, tightening EVM alignment (e.g., PUSH0, MCOPY) and shrinking the delta with Ethereum for devs and tooling.
Base doubled throughput parameters — Base raised mainnet capacity from 75 → 100 Mgas/s and upped the 1559 elasticity multiplier to 4, a direct scaling change that lowers congestion risk.

Foundry v1.4.4 released with numerous formatter improvements, including a new single_line_imports option to keep single imports on one line and fixes for function header size calculations.
Foundry's cast tool added more ERC20 methods, allowing developers to interact with token contracts more easily through the command line.
Foundry npm packages for anvil, cast, and chisel are now available, making it easier to integrate these tools into JavaScript/TypeScript projects.

House of Cards incident revealed Stream Finance and Elixir were caught in a recursive stablecoin minting scheme, where Stream turned $1.9 million into $14.5 million xUSD through circular backing.
Vibe coding risks highlighted how AI-generated code that "feels right" without proper understanding creates security vulnerabilities in crypto and DeFi applications.

The Gitcoin Grants programme (Round 24) officially opened its “Builder Support” phase — applications and donations are now live under the new “Gitcoin 3.0” framework.
In gaming-NFT commentary, an updated survey of October 2025 trends shows gaming/metaverse NFT activity across multiple chains (including Ethereum) remains vibrant, pointing to themed collections, in-game assets and hybrid models.

🚨 Lido at 23.48%, still too close to the 33.3% threshold.
Client diversity (via clientdiversity.org):
- Execution layer: Geth ~41% & Nethermind ~38%
- Consensus layer: Lighthouse 42.71%, Prysm 30.91%
- Any client bug over 33.3% could mean loss of finality
Better geographic diversity is optimal, particularly outside of North America & Europe

Consensus layer:
- Lighthouse v8.0.0-rc.2: Release candidate for the upcoming Fulu-Osaka (Fusaka) hard fork, targeting Holesky, Hoodi, and Sepolia testnets. Includes full PeerDAS support, enhanced networking capabilities, and memory optimizations.
- Teku 25.10.0: Fusaka-compatible release for testnets.

Fees (via ultrasound.money):
- Gas: 0.1 to 10.8 gwei, 0.3 gwei average; zero net issuance at 16.2 gwei
- 18.26 ETH net issuance this week
ETHUSD: $3,708 – $4,232, currently $3,900, all time high $4,946
ETHBTC: currently 0.035 (Flippening at ~0.165)

Aave Labs – Director of Enterprise Sales & Partnerships: Remote role focusing on enterprise-level sales and strategic partnerships in Web3
Aave Labs – Business Development Associate: Focuses on BD in the Web3/DeFi space
Binance – Talent Acquisition Specialist: Tech Focus, 6-mo contract, Remote

Nov 5–6: ETHWomen Florida 2025 in Florida, USA – A women-focused Ethereum hackathon and summit driving inclusion and innovation.
Nov 10–13: Web Summit 2025 in Lisbon, Portugal – Global tech event with dedicated blockchain and Ethereum programming tracks.
Nov 17–22: Devconnect Buenos Aires in Buenos Aires, Argentina – A week-long Ethereum gathering with deep dives, workshops, and the Ethereum World’s Fair.
Dec 11–13: Solana Breakpoint 2025 in Abu Dhabi, UAE – While Solana-focused, it includes multi-chain ecosystem discussions relevant to Ethereum builders.