Source: Cointelegraph.com NewsVitalik Buterin noted that Celo’s second L2 testnet, Alfajores, will be upgraded to Ethereum L2 on Sept. 26.Read MoreVitalik Buterin, Ethereum, Celo, USDC, UDST, Circle, Tether, Tron, Addresses, Dango, Alfajores, Layer 1, Layer 2, L1, L2