opBNB Fourier Mainnet is set to undergo a significant upgrade on January 7, 2026 at 03:00 UTC. The hard fork introduces a major performance enhancement through PR #305, which optimizes the block interval by reducing block time from 500 milliseconds to 250 milliseconds—essentially doubling network throughput. This improvement strengthens opBNB's position as a high-speed blockchain solution.

Node operators need to take action before the activation window. Make sure your infrastructure is ready by updating to the required version and conducting thorough testing. Timely preparation is crucial to maintain seamless network participation and avoid potential synchronization issues during the transition.