Ethereum co-founder V Shen said in an interview with the Block TV podcast that Ethereum 2.0 Phase 0 will start this summer. This is something we are very excited about. Proof of Stake (PoS) is finally becoming a reality. God V said that he expected ZK-rollups and Looprings to make great progress in improving the efficiency of their proofs. "I expect these two technologies to have a huge impact in the next year or so." Many people see ZK-Rollups as one of the privacy and scalability solutions for the new Ethereum 2.0 chain. In fact, Ethereum 2.0 researcher Danny Ryan recently explained that ZK-Rollups is much simpler than previous structures and also removes some core obstacles. In addition, at the recent AMA event held on Reddit, V God pointed out that in stateless clients, scalability will be improved, because downloading witnesses is cheaper than accessing disks, and it can be performed faster Block verification. Danny Ryan agrees with this, saying that Ethereum 2.0 Phase 0 will definitely start in 2020.