Ethereum just pushed its blob limit to 21 through the latest BPO hard fork, and this is huge for scaling. More blobs on the network means rollups can batch way more transactions together, which directly translates to cheaper gas fees for users. The upgrade addresses one of the main pain points L2 solutions have been dealing with—transaction throughput constraints. This kind of incremental optimization on the protocol level keeps compounding benefits for the entire ecosystem. Rollup-based solutions like Arbitrum and Optimism should see meaningful improvements in their transaction capacity and cost efficiency once the network fully settles into this new state.