BNB Chain has just reduced the turnLength for block validation from 16 to 8. This seemingly simple parameter adjustment actually has significant implications. A shorter turnLength can substantially reduce the risk of reorgs (chain reorganizations), and network stability is also improved as a result — this is a real improvement for the finality of transactions across the entire chain.

For developers, especially those working on validator prediction projects (such as Block-Builders), this change requires special attention. Your smart contracts or oracle logic may directly depend on the turnLength parameter. Now that it has changed, you must update your code logic accordingly; otherwise, prediction inaccuracies may occur. This is not optional; it’s a necessary update.

It is recommended that all relevant builders quickly review their projects to ensure they are synchronized with the new parameter.