Ethereum completes its final BPO fork for the Fusaka upgrade, further increasing the upper limit of data availability.

Ethereum Completes Final BPO Fork for Fusaka Upgrade, Further Enhancing Data Availability Caps] According to Mars Finance, Ethereum developers have completed the second and final "Blob Parameters Only (BPO)" fork planned within the Fusaka upgrade cycle. This update increases the target number of blobs in a block from 10 to 14, and the upper limit from 15 to 21, aiming to further improve the network's data availability capabilities. The official statement indicates that the BPO mechanism allows Ethereum to independently adjust key parameters such as blobs in stages without waiting for a large annual upgrade, thereby gradually testing and releasing network capacity in a more controlled manner. Blobs were initially introduced in the 2024 Dencun upgrade to provide low-cost data storage for Layer 2 Rollups; this type of data is automatically deleted after approximately 18 days on the mainnet. This adjustment is considered the final step in the Fusaka upgrade. Developers point out that as the maximum number of blobs per block increases, Ethereum can provide more data space for Layer 2 networks, which helps maintain stable transaction costs for rollups as on-chain activity grows.