According to Foresight News, Arbitrum has submitted an AIP proposal for the implementation of ArbOS20, which supports most of the Dencun changes. The AIP suggests upgrading ArbOS to add support for L2 transactions as a blob, which will be batch-published to Ethereum L1 (EIP-4844) on the Arbitrum execution engine Nitro. The proposal also recommends support for EIP-6780, EIP-5656, and EIP-1153. The ArbOS 20 audit process is set to begin soon.
Based on community feedback, Offchain Labs anticipates that the next step in the process will be a snapshot and popularity check vote in early February. The audit completion, formal DAO submission, and voting are expected to be finalized by mid-February.