Wu learned that the Ethereum Foundation released Protocol Update 002, introducing the research progress of Data Availability Sampling (DAS) and its importance for secure and scalable Data Availability (DA) expansion. The content updates include: Fusaka launched PeerDAS, a new data architecture that allows blob expansion beyond current throughput levels, from 6 blobs/block to 48 blobs/block; a simple Blob Parameter (BPO) fork will gradually increase the number of blobs on the Mainnet and support it through incremental point-to-point bandwidth optimization; Glamsterdam plans to adopt advanced networking technologies to iterate on the PeerDAS design for further expansion; as data scales continue to grow, memory pool sharding technology can preserve the value of Ether; research on the next generation of DAS will open up the evolution of secure DA expansion.