According to Foresight News, Starknet tweeted that Starknet v0.13.2 has been launched on the testnet and will be launched on the mainnet in a week. Starknet said that before, most blockchains processed transactions sequentially, which means that each transaction is processed one by one and needs to wait in the queue.
Starknet now supports the execution of multiple transactions simultaneously without having to wait for each transaction to complete individually. Unrelated transactions can be executed simultaneously because they will not interfere with each other.