Aave has launched its Aave V4 testnet, making the codebase available for public review. The new version introduces a "Hub and Spoke" architecture, centralizing liquidity through "Liquidity Hubs" rather than dispersing funds across various markets. This design aims to enhance efficiency and flexibility within the Aave network. Additionally, Aave has deployed a developer preview version called "Aave Pro," which offers a new interface tailored for DeFi native users. This initiative allows the community to test new features and developers to experiment with implementations, fostering innovation and collaboration within the ecosystem.