According to Odaily Planet Daily, the Arbitrum development team Offchain Labs said that Stylus is now online, which means that the Arbitrum One and Arbitrum Nova chains have introduced WASM VM, transforming from a simple EVM environment to a "multi-virtual machine" environment (MultiVM).
Developers can now write contracts on both chains using languages such as Rust, C, and C++, and the new contracts are fully composable with EVM contracts.