On the brand-new "Shandong" test network, Ethereum programmers may begin putting their upcoming system changes to the test (testnet). Shandong will serve as the testnet for the Shanghai upgrade, which is anticipated to take place sometime in 2023. Ever since the Merge in September, when Ethereum switched from a proof-of-work consensus process to a proof-of-stake model, it will be Ethereum's first update since then. https://remitano.com/news/122872-shanghai-the-upcoming-significant-ethereum-development-now-has-a-testnet