On October 26th, a16z engineer @NoahCitron said on the X platform that Helios is becoming the multi-chain light client side of Ethereum. The light client side is the foundation for Ethereum's expansion. The future with thousands of Rollups doesn't seem far away, and the closer you get to that goal, the more important Rollup interoperability becomes. Vitalik replied that this is an important step, and the next steps include: Helios (or alternative) is integrated into the user wallet, L2 configuration is uploaded to the chain, and L2 configuration specification proof-of-state verification rules. Once completed, there is a common L1 and L2 light client side verification.