According to ChainCatcher, ACI (Aave Chan Initiative) initiated an ARFC proposal vote in the Aave community to "introduce ETHx in the Aave V3 Arbitrum market and set up ACI as an emission manager to obtain rewards". It proposed to add the liquid equity token ETHx from Stader to Aave V3 Arbitrum, and let ACI become the emission manager, working with Stader to manage ARB distribution rewards, similar to the current SD incentive plan on the mainnet.