The BNB Chain ecosystem continues its aggressive expansion of technological capabilities. The published roadmap for the second half of 2026 reveals ambitious plans: doubling the throughput of the BSC mainnet and creating a fundamentally new Layer 1 (L1) blockchain with performance exceeding 100,000 transactions per second (TPS). This is not merely an evolutionary update, but a strategic leap that could radically alter the balance of power in the world of high-throughput networks.
Progress in Six Months: From Promises to Results
Just six months ago, the team set three priorities: speed, throughput, and protocol stability. The results achieved are impressive. The block interval has been reduced from 750 to 450 milliseconds, and in-memory finalization from 1125 to 650 milliseconds. Reference throughput has increased from 2800 to 5200 TPS. The network has become noticeably more stable after the Osaka/Mendel hard fork, confirmed by a significant reduction in the number of reorganizations.
Four technological improvements were the key drivers of this growth: a block-level access list (BAL), laying the foundation for parallel processing; incremental snapshots for fast node synchronization; EVM "superinstructions" to reduce overhead; and extended voting rules for accelerated finalization. The Rust client for BSC deserves special mention, achieving full compatibility with Reth v2.0 and delivering a twofold performance increase.
Plans for the Second Half and the Birth of a New L1
On the horizon of the second half of 2026, the team has made three commitments. First, to double BSC's throughput with a long-term goal of tenfold growth. Second, to isolate applications from each other so that a surge in load on one dApp does not affect the operation of others. Third, to lower the entry barrier for companies from Web2 and Web3 through more flexible fees.
However, the main strategic news is the new L1 blockchain. It is designed for performance exceeding 100,000 TPS, pre-confirmation of transactions in less than 50 milliseconds, and block finalization in under a second. The architecture includes a number of innovative solutions. The TxStream mechanism abandons the public mempool: transactions are directed straight to the block leader, reducing latency and blocking frontrunning. The PriorityLane mechanism reserves space in the block for critical traffic—oracle data, liquidations, and cross-chain bridges.
Also included are built-in privacy with selective data disclosure and account abstraction tools, allowing, for example, paying fees on behalf of a user or logging in with a passkey. The testnet launch is scheduled for the end of 2026, with the mainnet launch for early 2027.
Cryptalist Analysis: BNB Chain's ambitions are impressive, but the main question is whether the team can ensure decentralization at such speeds. Abandoning the public mempool and the PriorityLane mechanism are steps towards more centralized management of transaction flow, which may draw criticism from purists. However, for mass adoption and institutional clients, such a compromise may prove justified.