The Arbitrum community launched the "ArbOS version 20" proposal, which proposes many improvements to the Arbitrum chain, including the ability to use EIP 4844 to publish L2 transaction batches in the form of Blobs on L1 Ethereum at a lower price, and to Ethereum Support for most changes included in the Dencun upgrade. The proposed ArbOS 20 upgrade will be ready for adoption by any Arbitrum chain, involving the Arbitrum One and Nova chains, as they are managed by the Arbitrum DAO. At a high level, an ArbOS upgrade can be thought of as a hard fork of Arbitrum. It is reported that the ArbOS 20 version is an upgrade based on the ArbOS 11 version that has been adopted by Arbitrum DAO.
