BNB Chain used its H2 2026 technical roadmap to outline a faster chain stack and a next-generation layer 1 architecture now in development. The roadmap says BNB Smart Chain cut block intervals from 750 milliseconds in January to 450 milliseconds by June, reduced in-memory finality from 1,125 milliseconds to 650 milliseconds, and lifted benchmark throughput from about 2,800 transactions per second to about 5,200 TPS.

The second-half plan is to double mainnet throughput again while moving toward a broader 10x improvement across the ecosystem. BNB Chain says the new L1 design is being built on a path toward a long-term 1 million TPS target, but it has not published a full specification or launch-ready implementation.

CoinDesk reported that the new chain is intended to run alongside the existing BNB Chain ecosystem, with a public testnet targeted for the end of 2026 and mainnet planned for early 2027. The report framed the design around high-frequency trading and autonomous AI agents, two workloads that need fast execution, predictable fees, and isolation from unrelated network load.

The announcement is still a roadmap, not a delivered network. The near-term signal is that BNB Chain is prioritizing latency, throughput, and application-specific execution lanes as it tries to support more demanding onchain finance and agent activity.