Starknet mainnet completes v0.13.2 upgrade, supports parallel execution and block packaging

Starknet has announced that it has completed the Starknet v0.13.2 (Bolt) upgrade on the mainnet, supporting parallel execution and block packing. Parallel execution allows transactions within the Starknet sorter to be executed simultaneously, while block packing batches multiple L2 blocks into a special recursive proof of application. Through block packing, each Starknet state update will process multiple Starknet blocks, allowing for batch processing of L1 fixed costs.