Huge news for Ethereum!

Fusaka upgrade is set to go live on December 3, 2025.

Ethereum core developers outlined the roadmap during ACDC #165 call:

• Sept 22 – Code freeze.

• Sept 25 – Testnet client releases.

• Oct 1 – Holesky fork.

• Oct 14 – Sepolia fork.

• Oct 28 – Hoodi fork.

• Early Nov – Mainnet clients.

• Dec 3 – Fusaka Mainnet activation (tentative).

Alongside Fusaka, developers will also introduce Blob Parameter Only (BPO) forks – smaller, consensus-only upgrades designed to fine-tune blob targets and limits.

This will help the network scale blob usage incrementally.

The main question, what’s inside Fusaka?

In total, it includes 11 EIPs:

• EIP-7594: PeerDAS.

• EIP-7642: eth/69 (History Expiry & Simpler Receipts).

• EIP-7823: Set Upper Bounds for MODEXP.

• EIP-7825: Transaction Gas Limit Cap.

• EIP-7883: ModExp Gas Cost Increase.

• EIP-7892: Blob Parameter Only Forks.

• EIP-7917: Deterministic Proposer Lookahead.

• EIP-7918: Blob Base Fee Bound.

• EIP-7934: RLP Execution Block Size Limit.

• EIP-7935: Default Gas Limit Update.

• EIP-7939: CLZ Opcode.

• EIP-7951: secp256r1 Curve Support.

Guys, which feature are you most looking forward to?

And what are your overall expectations for Fusaka?

Source: https://www.youtube.com/watch?v=CTfwQ4kOhE4

This post was written by Everstake, a responsible staking provider trusted by 735K+ users across 70+ blockchain networks.