The Ethereum Foundation has launched the Mekong Testnet to test features of the upcoming Pectra upgrade.The Pectra upgrade aims to improve Ethereum's scalability, efficiency, and user experience.Pectra will enable gas fees to be paid in tokens other than ETH, simplifying the user experience for dApp users.Mekong Testnet is feature complete with all the intended Ethereum Improvement Proposals (EIPs) for Pectra.