Targeted changes introduce PeerDAS, easier blob adjustments, and a recalibrated L1–L2 fee balance
Ethereum’s Fusaka upgrade, scheduled for release this week, marks a shift in how the network evolves. Rather than waiting years for sweeping overhauls, developers are leaning into smaller, high-impact updates designed to expand rollup capacity while preserving access for everyday node operators.
PeerDAS Reduces Duplication, Boosts Data Efficiency
The centerpiece of Fusaka is EIP-7594, known as Peer Data Availability Sampling (PeerDAS). The change lets nodes verify only small portions of rollup data instead of downloading entire packages, reducing bandwidth and allowing more data to move through the network.
The upgrade also creates a new mechanism for adjusting Ethereum’s blob capacity — the data space used by rollups. Instead of scheduling another full hard fork, developers can now modify blob parameters independently, allowing pre-planned increases to roll out with less overhead.
Balancing Fees Between Layer 1 and Layer 2
Fusaka introduces refinements to how Ethereum prices L2 data requests, aiming to keep the relationship between the base chain and rollups sustainable. During periods of low demand, L2s will see more appropriate pricing — a change intended to ensure neither side is subsidizing the other.
Developers say the upgrade was tested extensively to make sure it stays compatible with consumer-grade hardware. With the network already reporting lower gas fees and a shrinking transaction backlog, Fusaka is positioned as a capacity expansion that strengthens Ethereum’s long-term roadmap without sidelining small operators.
The next test, researchers say, will be whether the ecosystem steadily adopts this new space — and whether usage rises in the months that follow.
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