This article covers the main changes proposed by six EIPs for the Cancun upgrade, including EIP-1153, EIP-4788, EIP-4844, EIP-5656, EIP-6780, and EIP-7516. EIP-4844, the focus of this upgrade, aims to enhance Ethereum's scalability, reducing transaction costs and increasing transaction speeds for Layer 2 solutions. The Cancun upgrade has been successfully tested on the Ethereum Goerli, Sepolia, and Holesky testnets on January 17th, January 30th, and February 7th, respectively, with activation planned for March 13th on the Ethereum mainnet.