The Ethereum Foundation has released an announcement regarding the Dencun mainnet upgrade. Dencun is expected to be activated on the Ethereum mainnet at 21:55 on March 13, 2024 (Beijing time) with a block height of 269568. Node operators and stakers must upgrade their software to the versions listed in the announcement. This upgrade introduces a temporary data blob with EIP-4844, also known as protodanksharding, which will help reduce L2 transaction fees.