According to Tally, the AIP-2 proposal for activating support for account abstraction endpoints on Arbitrum One and Nova has passed with 99.95% votes and is currently awaiting implementation. According to the proposal, Ethereum researchers propose a new RPC endpoint eth_sendRawTransactionConditional to adapt the L2 sequencer to the specific needs of ERC-4337 bundlers (bundlers). Offchain Labs supported the Arbitrum sequencer endpoint by developing, testing, and incorporating the necessary tweaks into Nitro v.2.0.14, which is now live on the Arbitrum testnet. This AIP recommends that Arbitrum DAO activate support for this endpoint on Arbitrum One and Nova mainnet. Since EIP-4339 separates validation and execution into separate steps in the process of bundling transactions for submission to an alternative mempool, this split poses potential problems for bundlers processing L2 transactions. Due to the delay between the initial submission of the transaction and its final inclusion, during this time the storage of the smart contract account may change and invalidate the transaction. The new RPC endpoint allows users to specify valid ranges for block heights and timestamps, allowing the sequencer to reject transactions that do not meet inclusion criteria during the early validation phase, addressing the risk that in-account storage may change between validation and execution.