On November 3, it was announced that the expansion plan of Ethereum, Optimism, had been created before.
RetroPGF (Retroactive Public Goods Funding), a retroactive public product fund experiment to support non-profit and open source software projects. A total of $1 million in donations has been allocated, and a total of 58 projects have received donations. The donated projects include Ethers.js, go-ethereum, EthGlobal, Hardhat, WalletConnect, Solidity, etc.