Odaily News Starknet Community Forum released relevant information about the next version (V0.12.3, V0.13.0) and Sepolia testnet migration, including: 1. V0.12.3 will bring a very important change, that is, the feeder gateway will be abandoned. , builders should migrate to API services or run full nodes independently; V0.12.3 also introduces some changes to _validate_ of account contracts; 2. V0.13.0 will include a new transaction type V3. This transaction type sets the stage for future features on the roadmap, including payment of transaction fees in STRK in addition to ETH, fee markets, paymaster and nonce generalization; in addition, V0.13.0 will ship with a new Cairo version V2.4.0 , which introduces string literals and basic string operations. 3. The following are the planned dates for the network upgrade: - November 19, 2023: V0.12.3 Goerli test network; - December 11, 2023: V0.12.3 main network. Please note that this is one week earlier than the date previously communicated; - December 5, 2023: V0.13.0 Goerli testnet. If necessary, this date may be pushed back a week to December 13th; - January 22nd, 2024: V0.13.0 mainnet, pending governance vote. 4. In addition to version updates, Starknet will migrate the test network to Sepolia after Goerli is deprecated. The Goerli testnet will be supported until the end of 2023, and developers are encouraged to move to Sepolia if possible. Starknet will begin migrating to the Sepolia testnet on November 15, 2023. At that time, full nodes, API services, SDKs, and other Starknet development tools will also begin to migrate to Sepolia.