Merlin Chain is set to undergo a mainnet upgrade on November 26, 2025, aimed at enhancing scalability and addressing ZooKeeper performance issues. The upgrade will commence at 13:00 (UTC+8) and is expected to last for 12 hours. During this period, transaction submissions on the mainnet will be temporarily suspended, though users will still be able to access historical transaction records and account balances via the block explorer. Normal operations will resume automatically once the upgrade is completed.