According to WuSay, a16z engineer @NoahCitron said that Helios is becoming a multi-chain light client for Ethereum. The importance of light clients to Ethereum expansion has become very clear. Thousands of rollups in the future are not far away.
Vitalik Buterin responded that this is an important step, and the next key steps include: integrating Helios or alternatives into user wallets, L2 configuration on-chain, and L2 configuration specification state proof verification rules. Once these steps are completed, L1 and L2 light client verification will be universal.