$Celo, a mobile-first Layer 1 blockchain, has launched its Dango Layer 2 testnet as a significant step towards integrating with the Ethereum ecosystem. This move follows a community vote to transition from a Layer 1 to a Layer 2 network under Ethereum, utilizing Optimism's technology. The new network promises enhanced transaction speeds, reduced block times, and continued support for USDT and USDC stablecoins for gas costs. The mainnet launch is expected in early winter 2024.