Ethereum Prepares for Major Upgrade with Fusaka Protocol and BPO Forks

The Ethereum ecosystem has been abuzz with activity as it prepares for its next major upgrade, scheduled to occur in September 2026. One of the key components of this upgrade is the Fusaka protocol, which aims to increase data availability capacity for Layer 2 rollups.

The Fusaka protocol uses a technique called PeerDAS (Peer-to-Peer Data Availability Sampling), which divides blob data into smaller chunks and distributes them across nodes in the network. This approach allows nodes to verify data by sampling small portions, rather than downloading entire datasets.

However, some experts have raised concerns about the potential impact of these changes on network stability during periods of high traffic. With the automated Blob Parameter Only (BPO) forks set to increase blob counts without coordinated node software updates, there is a risk that network instability could ensue.