ChainCatcher message, the secure blockchain application standard OpenZeppelin has released Solidity Contracts v5.3, with core highlights including: the new multi-token standard ERC-6909, featuring minimal implementation, metadata support, supply tracking, and content URI extension; a new proposal guardian role, added sequential proposal IDs, and new supermajority mechanism among other governance improvements.

ChainCatcher news, Arbitrum officials posted on the X platform stating that Stylus contracts are fully interoperable with Solidity contracts, which means developers can mix and match contracts within the protocol. This means more options, more optimizations, and stronger development capabilities.