@timiverse
Ethereum is rolling out one of its biggest upgrades yet, Fusaka, a dual update to both the execution and consensus layers. Shipping today, December 3, 2025 (today), it isn’t a new token or chain, but a deep optimization of how Ethereum works under the hood.
What is Fusaka?
A combined major blockchain upgrade for Ethereum featuring:
> Fulu (consensus upgrade)
> Osaka (execution upgrade)
Together, they boost Ethereum’s speed, scalability, and Layer-2 performance.
Fusaka aims to:
> Expand data capacity
> Reduce network load
> Strengthen decentralization
> Lower costs for users and developers
Key Features
1. PeerDAS (Peer Data Availability Sampling):
> Cuts storage + bandwidth needs
> Lowers the barrier to running nodes
2. Higher Data & Transaction Capacity:
> More transactions per block
> Better performance for complex contracts
3. Stronger Layer-2 Support:
> Cheaper rollups
> Faster confirmations
4. Lighter, More Efficient Nodes:
> Reduced validator overhead
> More decentralization
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