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