The Optimism Goerli testnet will upgrade to the Bedrock architecture on January 13, which can reduce gas fees by approximately 20%

ChainCatcher message, the Optimism Goerli testnet will begin upgrading to the Bedrock architecture on January 13 at 2:00 AM, with an estimated upgrade time of about 2 hours. This upgrade is similar to a hard fork, and the new Optimism Goerli chain will be a continuation of the old chain, with no loss of historical transaction data and no "regeneration" event where the chain resets at block 0.

During the upgrade, deposits and withdrawals on the previous Optimism Goerli testnet will be suspended, transactions on the previous Optimism Goerli sequencer will be halted, smart contracts on Layer 1 will be upgraded, and unconventional state transitions will occur on Layer 2. At the same time, this upgrade will launch the Bedrock sequencer, reopen deposit and withdrawal functions, and distribute contract addresses, binaries, and data directories for interacting with the new system.

It is reported that this upgrade will reduce gas fees by approximately 20%, shorten deposit times, build a more secure and stable codebase and products, and simplify node infrastructure. (Source link)